TCP & UDP Port
TCP and UDP are both transport protocols above the IP layer, which are interfaces between IP and upper-layer processes. TCP and UDP protocol port numbers are designed to distinguish multiple applications running on a single device from one another.
Since many network applications may be running on the same machine, computers need something to make sure the correct software application on the destination computer gets the data packets from the source machine, and some way to make sure replies get routed to the correct application on the source computer. This is accomplished through the use of the TCP or UDP "port numbers". In the TCP and UDP header, there are "Source Port" and "Destination Port" fields which are used to indicate the message sending process and receiving process identities defined. The combination of the IP address and the port number is called "socket".
There three port ranges defined by IETF IANA: The Well Known Ports, the Registered Ports, and the Dynamic and/or Private Ports.
- The Well Known Ports are those from 0 through 1023.
- The Registered Ports are those from 1024 through 49151.
- The Dynamic and/or Private Ports are those from 49152 through 65535
Originally, these port numbers were used by the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), but are used also for the Stream Control Transmission Protocol (SCTP), and the Datagram Congestion Control Protocol (DCCP). SCTP and DCCP services usually use a port number that matches the service of the corresponding TCP or UDP implementation if they exist. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.[1] However, many unofficial uses of both well-known and registered port numbers occur in practice.
Table Legend
| Use | Description | Color |
|---|---|---|
| Official | Port is registered with IANA for the application | white |
| Unofficial | Port is not registered with IANA for the application | blue |
| Multiple use | Multiple applications are known to use this port. | yellow |
Well-known Ports
The port numbers in the range from 0 to 1023 are the well-known ports. They are used by system processes that provide widely-used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well-known ports.| Port | TCP | UDP | Description | Status |
|---|---|---|---|---|
| 0 | UDP | Reserved | Official | |
| 1 | TCP | UDP | TCP Port Service Multiplexer (TCPMUX) | Official |
| 2 | TCP | UDP | CompressNET Management Utility | Official |
| 3 | TCP | UDP | CompressNET Compression Process | Official |
| 4 | TCP | UDP | Unassigned | Official |
| 5 | TCP | UDP | Remote Job Entry | Official |
| 7 | TCP | UDP | Echo Protocol | Official |
| 8 | TCP | UDP | Unassigned | Official |
| 9 | TCP | UDP | Discard Protocol | Official |
| 10 | TCP | UDP | Unassigned | Official |
| 11 | TCP | UDP | Active Users (systat service) | Official |
| 12 | TCP | UDP | Unassigned | Official |
| 13 | TCP | UDP | Daytime Protocol (RFC 867) | Official |
| 14 | TCP | UDP | Unassigned | Official |
| 15 | TCP | UDP | Previously netstat service | Unofficial |
| 16 | TCP | UDP | Unassigned | Official |
| 17 | TCP | UDP | Quote of the Day | Official |
| 18 | TCP | UDP | Message Send Protocol | Official |
| 19 | TCP | UDP | Character Generator Protocol (CHARGEN) | Official |
| 20 | TCP | FTP—data transfer | Official | |
| 21 | TCP | FTP—control (command) | Official | |
| 22 | TCP | UDP | Secure Shell (SSH)—used for secure logins, file transfers (scp, sftp) and port forwarding | Official |
| 23 | TCP | Telnet protocol—unencrypted text communications | Official | |
| 24 | TCP | UDP | Priv-mail : any private mail system. | Official |
| 25 | TCP | Simple Mail Transfer Protocol (SMTP)—used for e-mail routing between mail servers | Official | |
| 26 | TCP | UDP | Unassigned | Official |
| 27 | TCP | UDP | NSW User System FE | Official |
| 29 | TCP | UDP | MSG ICP | Official |
| 33 | TCP | UDP | Display Support Protocol | Official |
| 34 | TCP | UDP | Remote File (RF)—used to transfer files between machines | Unofficial |
| 35 | TCP | UDP | Any private printer server protocol | Official |
| 37 | TCP | UDP | TIME protocol | Official |
| 39 | TCP | UDP | Resource Location Protocol (RLP)—used for determining the location of higher level services from hosts on a network | Official |
| 40 | TCP | UDP | Unassigned | Official |
| 42 | TCP | UDP | ARPA Host Name Server Protocol | Official |
| 42 | TCP | UDP | Windows Internet Name Service | Unofficial |
| 43 | TCP | WHOIS protocol | Official | |
| 47 | TCP | UDP | NI FTP | Official |
| 49 | TCP | UDP | TACACS Login Host protocol | Official |
| 50 | TCP | UDP | Remote Mail Checking Protocol | Official |
| 51 | TCP | UDP | IMP Logical Address Maintenance | Official |
| 52 | TCP | UDP | XNS (Xerox Network Systems) Time Protocol | Official |
| 53 | TCP | UDP | Domain Name System (DNS) | Official |
| 54 | TCP | UDP | XNS (Xerox Network Systems) Clearinghouse | Official |
| 55 | TCP | UDP | ISI Graphics Language (ISI-GL) | Official |
| 56 | TCP | UDP | XNS (Xerox Network Systems) Authentication | Official |
| 56 | TCP | UDP | Route Access Protocol (RAP) | Unofficial |
| 57 | TCP | Mail Transfer Protocol (RFC 780) | Unofficial | |
| 58 | TCP | UDP | XNS (Xerox Network Systems) Mail | Official |
| 67 | UDP | Bootstrap Protocol (BOOTP) Server; also used by Dynamic Host Configuration Protocol (DHCP) | Official | |
| 68 | UDP | Bootstrap Protocol (BOOTP) Client; also used by Dynamic Host Configuration Protocol (DHCP) | Official | |
| 69 | UDP | Trivial File Transfer Protocol (TFTP) | Official | |
| 70 | TCP | Gopher protocol | Official | |
| 71 | TCP | NETRJS protocol | Official | |
| 72 | TCP | NETRJS protocol | Official | |
| 73 | TCP | NETRJS protocol | Official | |
| 74 | TCP | NETRJS protocol | Official | |
| 79 | TCP | Finger protocol | Official | |
| 80 | TCP | UDP | Hypertext Transfer Protocol (HTTP) | Official |
| 81 | TCP | Torpark—Onion routing | Unofficial | |
| 82 | UDP | Torpark—Control | Unofficial | |
| 88 | TCP | UDP | Kerberos—authentication system | Official |
| 90 | TCP | UDP | dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map | Official |
| 90 | TCP | UDP | Pointcast | Unofficial |
| 99 | TCP | WIP Message protocol | Unofficial | |
| 101 | TCP | NIC host name | Official | |
| 102 | TCP | ISO-TSAP (Transport Service Access Point) Class 0 protocol | Official | |
| 104 | TCP | UDP | ACR/NEMA Digital Imaging and Communications in Medicine | Official |
| 105 | TCP | UDP | CCSO Nameserver Protocol (Qi/Ph) | Official |
| 107 | TCP | Remote TELNET Service protocol | Official | |
| 108 | TCP | UDP | SNA Gateway Access Server | Official |
| 109 | TCP | Post Office Protocol v2 (POP2) | Official | |
| 110 | TCP | Post Office Protocol v3 (POP3) | Official | |
| 111 | TCP | UDP | ONC RPC (SunRPC) | Official |
| 113 | TCP | ident—Authentication Service/Identification Protocol, used by IRC servers to identify users | Official | |
| 113 | UDP | Authentication Service (auth) | Official | |
| 115 | TCP | Simple File Transfer Protocol (SFTP) | Official | |
| 117 | TCP | UUCP Path Service | Official | |
| 118 | TCP | UDP | SQL (Structured Query Language) Services | Official |
| 119 | TCP | Network News Transfer Protocol (NNTP)—retrieval of newsgroup messages | Official | |
| 123 | UDP | Network Time Protocol (NTP)—used for time synchronization | Official | |
| 135 | TCP | UDP | DCE endpoint resolution | Official |
| 135 | TCP | UDP | Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service,[14] used to remotely manage services including DHCP server, DNS server and WINS. Also used by DCOM | Unofficial |
| 137 | TCP | UDP | NetBIOS NetBIOS Name Service | Official |
| 138 | TCP | UDP | NetBIOS NetBIOS Datagram Service | Official |
| 139 | TCP | UDP | NetBIOS NetBIOS Session Service | Official |
| 143 | TCP | Internet Message Access Protocol (IMAP)—management of email messages | Official | |
| 152 | TCP | UDP | Background File Transfer Program (BFTP) | Official |
| 153 | TCP | UDP | SGMP, Simple Gateway Monitoring Protocol | Official |
| 156 | TCP | UDP | SQL Service | Official |
| 158 | TCP | UDP | DMSP, Distributed Mail Service Protocol | Unofficial |
| 161 | UDP | Simple Network Management Protocol (SNMP) | Official | |
| 162 | TCP | UDP | Simple Network Management Protocol Trap (SNMPTRAP) | Official |
| 170 | TCP | Print-srv, Network PostScript | Official | |
| 175 | TCP | VMNET (IBM z/VM, z/OS & z/VSE - Network Job Entry(NJE)) | Official | |
| 177 | TCP | UDP | X Display Manager Control Protocol (XDMCP) | Official |
| 179 | TCP | BGP (Border Gateway Protocol) | Official | |
| 194 | TCP | UDP | Internet Relay Chat (IRC) | Official |
| 199 | TCP | UDP | SMUX, SNMP Unix Multiplexer | Official |
| 201 | TCP | UDP | AppleTalk Routing Maintenance | Official |
| 209 | TCP | UDP | The Quick Mail Transfer Protocol | Official |
| 210 | TCP | UDP | ANSI Z39.50 | Official |
| 213 | TCP | UDP | Internetwork Packet Exchange (IPX) | Official |
| 218 | TCP | UDP | Message posting protocol (MPP) | Official |
| 220 | TCP | UDP | Internet Message Access Protocol (IMAP), version 3 | Official |
| 256 | TCP | UDP | 2DEV "2SP" Port | Unofficial |
| 259 | TCP | UDP | ESRO, Efficient Short Remote Operations | Official |
| 264 | TCP | UDP | BGMP, Border Gateway Multicast Protocol | Official |
| 280 | TCP | UDP | http-mgmt | Official |
| 308 | TCP | Novastor Online Backup | Official | |
| 311 | TCP | Mac OS X Server Admin (officially AppleShare IP Web administration)[citation needed] | Official | |
| 318 | TCP | UDP | PKIX TSP, Time Stamp Protocol | Official |
| 319 | UDP | Precision time protocol event messages | Official | |
| 320 | UDP | Precision time protocol general messages | Official | |
| 323 | TCP | UDP | IMMP, Internet Message Mapping Protocol | Unofficial |
| 350 | TCP | UDP | MATIP-Type A, Mapping of Airline Traffic over Internet Protocol | Official |
| 351 | TCP | UDP | MATIP-Type B, Mapping of Airline Traffic over Internet Protocol | Official |
| 366 | TCP | UDP | ODMR, On-Demand Mail Relay | Official |
| 369 | TCP | UDP | Rpc2portmap | Official |
| 370 | TCP | codaauth2—Coda authentication server | Official | |
| 370 | UDP | codaauth2—Coda authentication server | Official | |
| 370 | UDP | securecast1—Outgoing packets to NAI's servers [dead link] | Unofficial | |
| 371 | TCP | UDP | ClearCase albd | Official |
| 383 | TCP | UDP | HP data alarm manager | Official |
| 384 | TCP | UDP | A Remote Network Server System | Official |
| 387 | TCP | UDP | AURP, AppleTalk Update-based Routing Protocol | Official |
| 389 | TCP | UDP | Lightweight Directory Access Protocol (LDAP) | Official |
| 401 | TCP | UDP | UPS Uninterruptible Power Supply | Official |
| 402 | TCP | Altiris, Altiris Deployment Client | Unofficial | |
| 411 | TCP | Direct Connect Hub | Unofficial | |
| 412 | TCP | Direct Connect Client-to-Client | Unofficial | |
| 427 | TCP | UDP | Service Location Protocol (SLP) | Official |
| 443 | TCP | HTTPS (Hypertext Transfer Protocol over SSL/TLS) | Official | |
| 444 | TCP | UDP | SNPP, Simple Network Paging Protocol (RFC 1568) | Official |
| 445 | TCP | Microsoft-DS Active Directory, Windows shares | Official | |
| 445 | TCP | Microsoft-DS SMB file sharing | Official | |
| 464 | TCP | UDP | Kerberos Change/Set password | Official |
| 465 | TCP | Cisco protocol | Unofficial | |
| 465 | TCP | SMTP over SSL | Unofficial | |
| 475 | TCP | UDP | tcpnethaspsrv (Aladdin Knowledge Systems Hasp services, TCP/IP version) | Official |
| 497 | TCP | Dantz Retrospect | Official | |
| 500 | TCP | Qmatic Qwin communication port | Unofficial | |
| 500 | UDP | Internet Security Association and Key Management Protocol (ISAKMP) | Official | |
| 501 | TCP | STMF, Simple Transportation Management Framework—DOT NTCIP 1101 | Unofficial | |
| 502 | TCP | UDP | asa-appl-proto, Protocol | Unofficial |
| 502 | TCP | UDP | Modbus, Protocol | Unofficial |
| 504 | TCP | UDP | Citadel—multiservice protocol for dedicated clients for the Citadel groupware system | Official |
| 510 | TCP | First Class Protocol | Unofficial | |
| 512 | TCP | Rexec, Remote Process Execution | Official | |
| 512 | UDP | comsat, together with biff | Official | |
| 513 | TCP | rlogin | Official | |
| 513 | UDP | Who | Official | |
| 514 | TCP | Shell—used to execute non-interactive commands on a remote system (Remote Shell, rsh, remsh) | Official | |
| 514 | UDP | Syslog—used for system logging | Official | |
| 515 | TCP | Line Printer Daemon—print service | Official | |
| 517 | UDP | Talk | Official | |
| 518 | UDP | NTalk | Official | |
| 520 | TCP | efs, extended file name server | Official | |
| 520 | UDP | Routing Information Protocol (RIP) | Official | |
| 524 | TCP | UDP | NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc. | Official |
| 525 | UDP | Timed, Timeserver | Official | |
| 530 | TCP | UDP | RPC | Official |
| 531 | TCP | UDP | AOL Instant Messenger | Unofficial |
| 532 | TCP | netnews | Official | |
| 533 | UDP | netwall, For Emergency Broadcasts | Official | |
| 540 | TCP | UUCP (Unix-to-Unix Copy Protocol) | Official | |
| 542 | TCP | UDP | commerce (Commerce Applications) | Official |
| 543 | TCP | klogin, Kerberos login | Official | |
| 544 | TCP | kshell, Kerberos Remote shell | Official | |
| 545 | TCP | OSIsoft PI (VMS), OSISoft PI Server Client Access | Unofficial | |
| 546 | TCP | UDP | DHCPv6 client | Official |
| 547 | TCP | UDP | DHCPv6 server | Official |
| 548 | TCP | Apple Filing Protocol (AFP) over TCP | Official | |
| 550 | UDP | new-rwho, new-who | Official | |
| 554 | TCP | UDP | Real Time Streaming Protocol (RTSP) | Official |
| 556 | TCP | Remotefs, RFS, rfs_server | Official | |
| 560 | UDP | rmonitor, Remote Monitor | Official | |
| 561 | UDP | monitor | Official | |
| 563 | TCP | UDP | NNTP protocol over TLS/SSL (NNTPS) | Official |
| 587 | TCP | e-mail message submission (SMTP) | Official | |
| 591 | TCP | FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80) | Official | |
| 593 | TCP | UDP | HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server | Official |
| 604 | TCP | TUNNEL profile,[21] a protocol for BEEP peers to form an application layer tunnel | Official | |
| 623 | UDP | ASF Remote Management and Control Protocol (ASF-RMCP) | Official | |
| 631 | TCP | UDP | Internet Printing Protocol (IPP) | Official |
| 631 | TCP | UDP | Common Unix Printing System (CUPS) | Unofficial |
| 635 | TCP | UDP | RLZ DBase | Official |
| 636 | TCP | UDP | Lightweight Directory Access Protocol over TLS/SSL (LDAPS) | Official |
| 639 | TCP | UDP | MSDP, Multicast Source Discovery Protocol | Official |
| 641 | TCP | UDP | SupportSoft Nexus Remote Command (control/listening): A proxy gateway connecting remote control traffic | Official |
| 646 | TCP | UDP | LDP, Label Distribution Protocol, a routing protocol used in MPLS networks | Official |
| 647 | TCP | DHCP Failover protocol | Official | |
| 648 | TCP | RRP (Registry Registrar Protocol) | Official | |
| 651 | TCP | UDP | IEEE-MMS | Official |
| 652 | TCP | DTCP, Dynamic Tunnel Configuration Protocol | Unofficial | |
| 653 | TCP | UDP | SupportSoft Nexus Remote Command (data): A proxy gateway connecting remote control traffic | Official |
| 654 | TCP | Media Management System (MMS) Media Management Protocol (MMP) | Official | |
| 657 | TCP | UDP | IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM) and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration | Official |
| 660 | TCP | Mac OS X Server administration | Official | |
| 665 | TCP | sun-dr, Remote Dynamic Reconfiguration | Unofficial | |
| 666 | UDP | Doom, first online first-person shooter | Official | |
| 674 | TCP | ACAP (Application Configuration Access Protocol) | Official | |
| 691 | TCP | MS Exchange Routing | Official | |
| 694 | TCP | UDP | Linux-HA High availability Heartbeat | Official |
| 695 | TCP | IEEE-MMS-SSL (IEEE Media Management System over SSL) | Official | |
| 698 | UDP | OLSR (Optimized Link State Routing) | Official | |
| 700 | TCP | EPP (Extensible Provisioning Protocol), a protocol for communication between domain name registries and registrars (RFC 5734) | Official | |
| 701 | TCP | LMP (Link Management Protocol (Internet)), a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links | Official | |
| 702 | TCP | IRIS[28][29] (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol) (RFC 3983) | Official | |
| 706 | TCP | Secure Internet Live Conferencing (SILC) | Official | |
| 711 | TCP | Cisco Tag Distribution Protocol—being replaced by the MPLS Label Distribution Protocol | Official | |
| 712 | TCP | Topology Broadcast based on Reverse-Path Forwarding routing protocol (TBRPF) (RFC 3684) | Official | |
| 712 | UDP | Promise RAID Controller | Unofficial | |
| 720 | TCP | SMQP, Simple Message Queue Protocol | Unofficial | |
| 749 | TCP | UDP | Kerberos (protocol) administration | Official |
| 750 | UDP | kerberos-iv, Kerberos version IV | Official | |
| 751 | TCP | UDP | kerberos_master, Kerberos authentication | Unofficial |
| 752 | UDP | passwd_server, Kerberos Password (kpasswd) server | Unofficial | |
| 753 | TCP | Reverse Routing Header (rrh) | Official | |
| 753 | UDP | Reverse Routing Header (rrh) | Official | |
| 753 | UDP | userreg_server, Kerberos userreg server | Unofficial | |
| 754 | TCP | tell send | Official | |
| 754 | TCP | krb5_prop, Kerberos v5 slave propagation | Unofficial | |
| 754 | UDP | tell send | Official | |
| 760 | TCP | UDP | krbupdate [kreg], Kerberos registration | Unofficial |
| 782 | TCP | Conserver serial-console management server | Unofficial | |
| 783 | TCP | SpamAssassin spamd daemon | Unofficial | |
| 808 | TCP | Microsoft Net.TCP Port Sharing Service | Official | |
| 829 | TCP | CMP (Certificate Management Protocol) | Unofficial | |
| 843 | TCP | Adobe Flash | Unofficial | |
| 847 | TCP | DHCP Failover protocol | Official | |
| 848 | TCP | UDP | Group Domain Of Interpretation (GDOI) protocol | Official |
| 860 | TCP | iSCSI (RFC 3720) | Official | |
| 873 | TCP | rsync file synchronisation protocol | Official USA only | |
| 888 | TCP | cddbp, CD DataBase (CDDB) protocol (CDDBP)—unassigned but widespread use | Unofficial | |
| 901 | TCP | Samba Web Administration Tool (SWAT) | Unofficial | |
| 901 | TCP | VMware Virtual Infrastructure Client (UDP from server being managed to management console) | Unofficial | |
| 901 | UDP | VMware Virtual Infrastructure Client (UDP from server being managed to management console) | Unofficial | |
| 902 | TCP | ideafarm-door | Official | |
| 902 | TCP | VMware Server Console (TCP from management console to server being Managed) | Unofficial | |
| 902 | UDP | ideafarm-door | Official | |
| 902 | UDP | VMware Server Console (UDP from server being managed to management console) | Unofficial | |
| 903 | TCP | VMware Remote Console | Unofficial | |
| 904 | TCP | VMware Server Alternate (if 902 is in use, i.e. SUSE linux) | Unofficial | |
| 911 | TCP | Network Console on Acid (NCA)—local tty redirection over OpenSSH | Unofficial | |
| 944 | UDP | Network File System (protocol) Service | Unofficial | |
| 953 | TCP | UDP | Domain Name System (DNS) RNDC Service | Unofficial |
| 973 | UDP | Network File System (protocol) over IPv6 Service | Unofficial | |
| 981 | TCP | SofaWare Technologies Remote HTTPS management for firewall devices running embedded Check Point FireWall-1 software | Unofficial | |
| 987 | TCP | Microsoft This Secure Hypertext Transfer Protocol (HTTPS) port makes Windows SharePoint Services viewable through Remote Web Workplace | Unofficial | |
| 989 | TCP | UDP | FTPS Protocol (data): FTP over TLS/SSL | Official |
| 990 | TCP | UDP | FTPS Protocol (control): FTP over TLS/SSL | Official |
| 991 | TCP | UDP | NAS (Netnews Administration System) | Official |
| 992 | TCP | UDP | TELNET protocol over TLS/SSL | Official |
| 993 | TCP | Internet Message Access Protocol over SSL (IMAPS) | Official | |
| 995 | TCP | Post Office Protocol 3 over TLS/SSL (POP3S) | Official | |
| 999 | TCP | ScimoreDB Database System | Unofficial | |
| 1002 | TCP | Opsware agent (aka cogbot) | Unofficial | |
| 1023 | TCP | UDP | Reserved | Official |
Registered Ports
The range of port numbers from 1024 to 49151 are the registered ports. They are assigned by IANA for specific service upon application by a requesting entity. On most systems registered ports can be used by ordinary users.| Port | TCP | UDP | Description | Status | |
|---|---|---|---|---|---|
| 1024 | TCP | UDP | Reserved | Official | |
| 1025 | TCP | NFS or IIS or Teradata | Unofficial | ||
| 1026 | TCP | Often used by Microsoft DCOM services | Unofficial | ||
| 1029 | TCP | Often used by Microsoft DCOM services | Unofficial | ||
| 1058 | TCP | UDP | nim, IBM AIX Network Installation Manager (NIM) | Official | |
| 1059 | TCP | UDP | nimreg, IBM AIX Network Installation Manager (NIM) | Official | |
| 1080 | TCP | SOCKS proxy | Official | ||
| 1085 | TCP | UDP | WebObjects | Official | |
| 1098 | TCP | UDP | rmiactivation, RMI Activation | Official | |
| 1099 | TCP | UDP | rmiregistry, RMI Registry | Official | |
| 1109 | UDP | Reserved | Official | ||
| 1109 | TCP | Reserved | Official | ||
| 1109 | TCP | Kerberos Post Office Protocol (KPOP) | Unofficial | ||
| 1110 | UDP | EasyBits School network discovery protocol (for Intel's CMPC platform) | Unofficial | ||
| 1140 | TCP | UDP | AutoNOC protocol | Official | |
| 1167 | UDP | phone, conference calling | Unofficial | ||
| 1169 | TCP | UDP | Tripwire | Official | |
| 1176 | TCP | Perceptive Automation Indigo Home automation server | Official | ||
| 1182 | TCP | UDP | AcceleNet Intelligent Transfer Protocol | Official | |
| 1194 | TCP | UDP | OpenVPN | Official | |
| 1198 | TCP | UDP | The cajo project Free dynamic transparent distributed computing in Java | Official | |
| 1200 | TCP | scol, protocol used by SCOL 3D virtual worlds server to answer world name resolution client request | Official | ||
| 1200 | UDP | scol, protocol used by SCOL 3D virtual worlds server to answer world name resolution client request | Official | ||
| 1200 | UDP | Steam Friends Applet | Unofficial | ||
| 1214 | TCP | Kazaa | Official | ||
| 1217 | TCP | Uvora Online | Unofficial | ||
| 1220 | TCP | QuickTime Streaming Server administration | Official | ||
| 1223 | TCP | UDP | TGP, TrulyGlobal Protocol, also known as "The Gur Protocol" (named for Gur Kimchi of TrulyGlobal) | Official | |
| 1234 | UDP | VLC media player Default port for UDP/RTP stream | Unofficial | ||
| 1236 | TCP | Symantec BindView Control UNIX Default port for TCP management server connections | Unofficial | ||
| 1241 | TCP | UDP | Nessus Security Scanner | Official | |
| 1270 | TCP | UDP | Microsoft System Center Operations Manager (SCOM) (formerly Microsoft Operations Manager (MOM)) agent | Official | |
| 1293 | TCP | UDP | IPSec (Internet Protocol Security) | Official | |
| 1301 | TCP | Palmer Performance OBDNet | Unofficial | ||
| 1309 | TCP | Altera Quartus jtagd | Unofficial | ||
| 1311 | TCP | Dell OpenManage HTTPS | Official | ||
| 1313 | TCP | Xbiim (Canvii server) | Unofficial | ||
| 1319 | TCP | AMX ICSP | Official | ||
| 1319 | UDP | AMX ICSP | Official | ||
| 1337 | UDP | Men and Mice DNS | Official | ||
| 1337 | TCP | Men and Mice DNS | Official | ||
| 1337 | TCP | PowerFolder P2P Encrypted File Synchronization Program | Unofficial | ||
| 1337 | TCP | WASTE Encrypted File Sharing Program | Unofficial | ||
| 1344 | TCP | Internet Content Adaptation Protocol | Official | ||
| 1352 | TCP | IBM Lotus Notes/Domino (RPC) protocol | Official | ||
| 1387 | TCP | UDP | cadsi-lm, LMS International (formerly Computer Aided Design Software, Inc. (CADSI)) LM | Official | |
| 1414 | TCP | IBM WebSphere MQ (formerly known as MQSeries) | Official | ||
| 1417 | TCP | UDP | Timbuktu Service 1 Port | Official | |
| 1418 | TCP | UDP | Timbuktu Service 2 Port | Official | |
| 1419 | TCP | UDP | Timbuktu Service 3 Port | Official | |
| 1420 | TCP | UDP | Timbuktu Service 4 Port | Official | |
| 1431 | TCP | Reverse Gossip Transport Protocol (RGTP), used to access a General-purpose Reverse-Ordered Gossip Gathering System (GROGGS) bulletin board, such as that implemented on the Cambridge University's Phoenix system | Official | ||
| 1433 | TCP | MSSQL (Microsoft SQL Server database management system) Server | Official | ||
| 1434 | TCP | UDP | MSSQL (Microsoft SQL Server database management system) Monitor | Official | |
| 1470 | TCP | Solarwinds Kiwi Log Server | Official | ||
| 1494 | TCP | Citrix XenApp Independent Computing Architecture (ICA) thin client protocol | Official | ||
| 1500 | TCP | NetGuard GuardianPro firewall (NT4-based) Remote Management | Unofficial | ||
| 1501 | UDP | NetGuard GuardianPro firewall (NT4-based) Authentication Client | Unofficial | ||
| 1503 | TCP | UDP | Windows Live Messenger (Whiteboard and Application Sharing) | Unofficial | |
| 1512 | TCP | UDP | Microsoft Windows Internet Name Service (WINS) | Official | |
| 1513 | TCP | UDP | Garena Garena Gaming Client | Official | |
| 1521 | TCP | nCube License Manager | Official | ||
| 1521 | TCP | Oracle database default listener, in future releases official port 2483 | Unofficial | ||
| 1524 | TCP | UDP | ingreslock, ingres | Official | |
| 1526 | TCP | Oracle database common alternative for listener | Unofficial | ||
| 1527 | TCP | Apache Derby Network Server default port | Unofficial | ||
| 1533 | TCP | IBM Sametime IM—Virtual Places Chat Microsoft SQL Server | Official | ||
| 1534 | UDP | Eclipse Target Communication Framework (TCF) agent discovery | Unofficial | ||
| 1547 | TCP | UDP | Laplink | Official | |
| 1550 | TCP | UDP | 3m-image-lm Image Storage license manager 3M Company | Official | |
| 1550 | Gadu-Gadu (direct client-to-client) | Unofficial | |||
| 1556 | TCP | Jeex-RB (direct client-to-db.service) | Unofficial | ||
| 1581 | UDP | MIL STD 2045-47001 VMF | Official | ||
| 1589 | UDP | Cisco VQP (VLAN Query Protocol) / VMPS | Unofficial | ||
| 1590 | TCP | GE Smallworld Datastore Server (SWMFS/Smallworld Master Filesystem) | Unofficial | ||
| 1627 | iSketch | Unofficial | |||
| 1645 | TCP | UDP | radius auth, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers) | Unofficial | |
| 1646 | TCP | UDP | radius acct, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers) | Unofficial | |
| 1666 | TCP | Perforce | Unofficial | ||
| 1677 | TCP | UDP | Novell GroupWise clients in client/server access mode | Official | |
| 1688 | TCP | Microsoft Key Management Service for KMS Windows Activation | Unofficial | ||
| 1700 | UDP | Cisco RADIUS Change of Authorization for TrustSec | Unofficial | ||
| 1701 | UDP | Layer 2 Forwarding Protocol (L2F) & Layer 2 Tunneling Protocol (L2TP) | Official | ||
| 1707 | TCP | UDP | Windward Studios | Official | |
| 1707 | TCP | Romtoc Packet Protocol (L2F) & Layer 2 Tunneling Protocol (L2TP) | Unofficial | ||
| 1716 | TCP | America's Army Massively multiplayer online game (MMO) | Unofficial | ||
| 1719 | UDP | H.323 Registration and alternate communication | Official | ||
| 1720 | TCP | H.323 Call signalling | Official | ||
| 1723 | TCP | UDP | Microsoft Point-to-Point Tunneling Protocol (PPTP) | Official | |
| 1725 | UDP | Valve Steam Client | Unofficial | ||
| 1755 | TCP | UDP | Microsoft Media Services (MMS, ms-streaming) | Official | |
| 1761 | UDP | cft-0 | Official | ||
| 1761 | TCP | cft-0 | Official | ||
| 1761 | TCP | Novell Zenworks Remote Control utility | Unofficial | ||
| 1762–1768 | TCP | UDP | cft-1 to cft-7 | Official | |
| 1792 | TCP | UDP | Moby | Unofficial | |
| 1801 | TCP | UDP | Microsoft Message Queuing | Official | |
| 1812 | TCP | UDP | radius, RADIUS authentication protocol | Official | |
| 1813 | TCP | UDP | radacct, RADIUS accounting protocol | Official | |
| 1863 | TCP | MSNP (Microsoft Notification Protocol), used by the .NET Messenger Service and a number of Instant Messaging clients | Official | ||
| 1883 | TCP | UDP | MQ Telemetry Transport (MQTT), formerly known as MQIsdp (MQSeries SCADA protocol) | Official | |
| 1886 | TCP | Leonardo over IP Pro2col Ltd | Unofficial | ||
| 1900 | UDP | Microsoft SSDP Enables discovery of UPnP devices | Official | ||
| 1920 | TCP | IBM Tivoli Monitoring Console (https) | Unofficial | ||
| 1935 | TCP | Adobe Systems Macromedia Flash Real Time Messaging Protocol (RTMP) "plain" protocol | Official | ||
| 1947 | TCP | UDP | SentinelSRM (hasplm), Aladdin HASP License Manager | Official | |
| 1967 | UDP | Cisco IOS IP Service Level Agreements (IP SLAs) Control Protocol | Unofficial | ||
| 1970 | TCP | UDP | Netop Business Solutions Netop Remote Control | Official | |
| 1971 | TCP | UDP | Netop Business Solutions Netop School | Official | |
| 1972 | TCP | UDP | InterSystems Caché | Official | |
| 1975–1977 | UDP | Cisco TCO (Documentation) | Official | ||
| 1984 | TCP | Big Brother and related Xymon (formerly Hobbit) System and Network Monitor | Official | ||
| 1985 | UDP | Cisco HSRP | Official | ||
| 1994 | TCP | UDP | Cisco STUN-SDLC (Serial Tunneling—Synchronous Data Link Control) protocol | Official | |
| 1997 | TCP | Chizmo Networks Transfer Tool | Unofficial | ||
| 1998 | TCP | UDP | Cisco X.25 over TCP (XOT) service | Official | |
| 2000 | TCP | UDP | Cisco SCCP (Skinny) | Official | |
| 2001 | UDP | CAPTAN Test Stand System | Unofficial | ||
| 2002 | TCP | Secure Access Control Server (ACS) for Windows | Unofficial | ||
| 2030 | Oracle Services for Microsoft Transaction Server | Unofficial | |||
| 2031 | TCP | UDP | mobrien-chat(http://chat.mobrien.com:2031) | Official | |
| 2041 | TCP | Mail.Ru Agent communication protocol | Unofficial | ||
| 2049 | UDP | Network File System | Official | ||
| 2049 | UDP | shilp | Official | ||
| 2053 | TCP | knetd Kerberos de-multiplexor | Unofficial | ||
| 2056 | UDP | Civilization 4 multiplayer | Unofficial | ||
| 2073 | TCP | UDP | DataReel Database | Official | |
| 2074 | TCP | UDP | Vertel VMF SA (i.e. App.. SpeakFreely) | Official | |
| 2082 | TCP | Infowave Mobility Server | Official | ||
| 2082 | TCP | CPanel default | Unofficial | ||
| 2083 | TCP | Secure Radius Service (radsec) | Official | ||
| 2083 | TCP | CPanel default SSL | Unofficial | ||
| 2086 | TCP | GNUnet | Official | ||
| 2086 | TCP | WebHost Manager default | Unofficial | ||
| 2087 | TCP | WebHost Manager default SSL | Unofficial | ||
| 2095 | TCP | CPanel default Web mail | Unofficial | ||
| 2096 | TCP | CPanel default SSL Web mail | Unofficial | ||
| 2102 | TCP | UDP | zephyr-srv Project Athena Zephyr Notification Service server | Official | |
| 2103 | TCP | UDP | zephyr-clt Project Athena Zephyr Notification Service serv-hm connection | Official | |
| 2104 | TCP | UDP | zephyr-hm Project Athena Zephyr Notification Service hostmanager | Official | |
| 2105 | TCP | UDP | IBM MiniPay | Official | |
| 2105 | TCP | UDP | eklogin Kerberos encrypted remote login (rlogin) | Unofficial | |
| 2105 | TCP | UDP | zephyr-hm-srv Project Athena Zephyr Notification Service hm-serv connection (should use port 2102) | Unofficial | |
| 2121 | TCP | FTP proxy | Unofficial | ||
| 2144 | TCP | Iron Mountain LiveVault Agent | Unofficial | ||
| 2145 | TCP | Iron Mountain LiveVault Agent | Unofficial | ||
| 2156 | UDP | Talari Reliable Protocol | Official | ||
| 2160 | TCP | APC Agent | Official | ||
| 2161 | TCP | APC Agent | Official | ||
| 2181 | TCP | UDP | EForward-document transport system | Official | |
| 2190 | UDP | TiVoConnect Beacon | Unofficial | ||
| 2200 | UDP | Tuxanci game server | Unofficial | ||
| 2210 | UDP | NOAAPORT Broadcast Network | Official | ||
| 2210 | TCP | NOAAPORT Broadcast Network | Official | ||
| 2210 | TCP | MikroTik Remote management for "The Dude" | Unofficial | ||
| 2211 | UDP | EMWIN | Official | ||
| 2211 | TCP | EMWIN | Official | ||
| 2211 | TCP | MikroTik Secure management for "The Dude" | Unofficial | ||
| 2212 | UDP | LeeCO POS Server Service | Official | ||
| 2212 | TCP | LeeCO POS Server Service | Official | ||
| 2212 | TCP | Port-A-Pour Remote WinBatch | Unofficial | ||
| 2219 | TCP | UDP | NetIQ NCAP Protocol | Official | |
| 2220 | TCP | UDP | NetIQ End2End | Official | |
| 2221 | TCP | ESET Anti-virus updates | Unofficial | ||
| 2222 | TCP | DirectAdmin default & ESET Remote Administration | Unofficial | ||
| 2223 | UDP | Microsoft Office OS X antipiracy network monitor | Unofficial | ||
| 2261 | TCP | UDP | CoMotion Master | Official | |
| 2262 | TCP | UDP | CoMotion Backup | Official | |
| 2301 | TCP | HP System Management Redirect to port 2381 | Unofficial | ||
| 2302 | UDP | ArmA multiplayer (default for game) | Unofficial | ||
| 2302 | UDP | Halo: Combat Evolved multiplayer | Unofficial | ||
| 2303 | UDP | ArmA multiplayer (default for server reporting) (default port for game +1) | Unofficial | ||
| 2305 | UDP | ArmA multiplayer (default for VoN) (default port for game +3) | Unofficial | ||
| 2323 | TCP | Philips TVs based on jointSPACE | Unofficial | ||
| 2369 | TCP | Default for BMC Software Control-M/Server—Configuration Agent, though often changed during installation | Official | ||
| 2370 | TCP | Default for BMC Software Control-M/Server—to allow the Control-M/Enterprise Manager to connect to the Control-M/Server, though often changed during installation | Official | ||
| 2379 | TCP | KGS Go Server | Unofficial | ||
| 2381 | TCP | HP Insight Manager default for Web server | Unofficial | ||
| 2401 | TCP | CVS version control system | Unofficial | ||
| 2404 | TCP | IEC 60870-5 -104, used to send electric power telecontrol messages between two systems via directly connected data circuits | Official | ||
| 2420 | UDP | Westell Remote Access | Official | ||
| 2427 | UDP | Cisco MGCP | Official | ||
| 2447 | TCP | UDP | ovwdb—OpenView Network Node Manager (NNM) daemon | Official | |
| 2483 | TCP | UDP | Oracle database listening for unsecure client connections to the listener, replaces port 1521 | Official | |
| 2484 | TCP | UDP | Oracle database listening for SSL client connections to the listener | Official | |
| 2500 | TCP | THEÒSMESSENGER listening for TheòsMessenger client connections | Official | ||
| 2501 | TCP | TheosNet-Admin listening for TheòsMessenger client connections | Official | ||
| 2518 | TCP | UDP | Willy | Official | |
| 2525 | TCP | SMTP alternate | Unofficial | ||
| 2535 | TCP | MADCAP | Official | ||
| 2546 | TCP | UDP | EVault—Data Protection Services | Unofficial | |
| 2593 | TCP | UDP | RunUO—Ultima Online server | Unofficial | |
| 2598 | TCP | new ICA (Citrix) —when Session Reliability is enabled, TCP port 2598 replaces port 1494 | Unofficial | ||
| 2599 | TCP | SonicWALL Antispam traffic between Remote Analyzer (RA) and Control Center (CC) | Unofficial | ||
| 2610 | TCP | Dark Ages | Unofficial | ||
| 2612 | TCP | UDP | QPasa from MQSoftware | Official | |
| 2638 | TCP | Sybase database listener | Unofficial | ||
| 2636 | TCP | Solve Service | Official | ||
| 2641 | TCP | UDP | HDL Server from CNRI | Official | |
| 2642 | TCP | UDP | Tragic | Official | |
| 2698 | TCP | UDP | Citel / MCK IVPIP | Official | |
| 2700–2800 | TCP | KnowShowGo P2P | Official | ||
| 2710 | TCP | XBT Bittorrent Tracker | Unofficial | ||
| 2710 | UDP | XBT Bittorrent Tracker experimental UDP tracker extension | Unofficial | ||
| 2710 | TCP | Knuddels.de | Unofficial | ||
| 2735 | TCP | UDP | NetIQ Monitor Console | Official | |
| 2809 | TCP | corbaloc:iiop URL, per the CORBA 3.0.3 specification | Official | ||
| 2809 | TCP | IBM WebSphere Application Server (WAS) Bootstrap/rmi default | Unofficial | ||
| 2809 | UDP | corbaloc:iiop URL, per the CORBA 3.0.3 specification. | Official | ||
| 2868 | TCP | UDP | Norman Proprietary Event Protocol NPEP | Official | |
| 2944 | UDP | Megaco Text H.248 | Unofficial | ||
| 2945 | UDP | Megaco Binary (ASN.1) H.248 | Unofficial | ||
| 2947 | TCP | gpsd GPS daemon | Official | ||
| 2948 | TCP | UDP | WAP-push Multimedia Messaging Service (MMS) | Official | |
| 2949 | TCP | UDP | WAP-pushsecure Multimedia Messaging Service (MMS) | Official | |
| 2967 | TCP | Symantec AntiVirus Corporate Edition | Unofficial | ||
| 3000 | TCP | Miralix License server | Unofficial | ||
| 3000 | TCP | Cloud9 Integrated Development Environment server | Unofficial | ||
| 3000 | UDP | Distributed Interactive Simulation (DIS), modifiable default | Unofficial | ||
| 3000 | TCP | Ruby on Rails development default | Unofficial | ||
| 3001 | TCP | Miralix Phone Monitor | Unofficial | ||
| 3001 | TCP | Opsware server (Satellite) | Unofficial | ||
| 3002 | TCP | Miralix CSTA | Unofficial | ||
| 3003 | TCP | Miralix GreenBox API | Unofficial | ||
| 3004 | TCP | Miralix InfoLink | Unofficial | ||
| 3005 | TCP | Miralix TimeOut | Unofficial | ||
| 3006 | TCP | Miralix SMS Client Connector | Unofficial | ||
| 3007 | TCP | Miralix OM Server | Unofficial | ||
| 3008 | TCP | Miralix Proxy | Unofficial | ||
| 3017 | TCP | Miralix IVR and Voicemail | Unofficial | ||
| 3025 | TCP | netpd.org | Unofficial | ||
| 3030 | TCP | UDP | NetPanzer | Unofficial | |
| 3050 | TCP | UDP | gds_db (Interbase/Firebird) | Official | |
| 3051 | TCP | UDP | Galaxy Server (Gateway Ticketing Systems) | Official | |
| 3052 | TCP | UDP | APC PowerChute Network [45] | Official | |
| 3074 | TCP | UDP | Xbox LIVE and/or Games for Windows - LIVE | Official | |
| 3100 | TCP | HTTP used by Tatsoft as the default listen port | Unofficial | ||
| 3101 | TCP | BlackBerry Enterprise Server communication to cloud | Unofficial | ||
| 3128 | TCP | HTTP used by Web caches and the default for the Squid (software) | Unofficial | ||
| 3128 | TCP | HTTP used by Tatsoft as the default client connection | Unofficial | ||
| 3225 | TCP | UDP | FCIP (Fiber Channel over Internet Protocol) | Official | |
| 3233 | TCP | UDP | WhiskerControl research control protocol | Official | |
| 3235 | TCP | UDP | Galaxy Network Service (Gateway Ticketing Systems) | Official | |
| 3260 | TCP | iSCSI target | Official | ||
| 3268 | TCP | UDP | msft-gc, Microsoft Global Catalog (LDAP service which contains data from Active Directory forests) | Official | |
| 3269 | TCP | UDP | msft-gc-ssl, Microsoft Global Catalog over SSL (similar to port 3268, LDAP over SSL) | Official | |
| 3283 | TCP | Apple Remote Desktop reporting (officially Net Assistant, referring to an earlier product) | Official | ||
| 3299 | TCP | SAP-Router (routing application proxy for SAP R/3) | Unofficial | ||
| 3300 | TCP | UDP | Debate Gopher backend database system | Unofficial | |
| 3305 | TCP | UDP | odette-ftp, Odette File Transfer Protocol (OFTP) | Official | |
| 3306 | TCP | UDP | MySQL database system | Official | |
| 3313 | TCP | Verisys - File Integrity Monitoring Software | Unofficial | ||
| 3333 | TCP | Network Caller ID server | Unofficial | ||
| 3333 | TCP | CruiseControl.rb | Unofficial | ||
| 3386 | TCP | UDP | GTP' 3GPP GSM/UMTS CDR logging protocol | Official | |
| 3389 | TCP | UDP | Microsoft Terminal Server (RDP) officially registered as Windows Based Terminal (WBT) - Link | Official | |
| 3396 | TCP | UDP | Novell NDPS Printer Agent | Official | |
| 3412 | TCP | UDP | xmlBlaster | Official | |
| 3455 | TCP | UDP | [RSVP] Reservation Protocol | Official | |
| 3423 | TCP | Xware xTrm Communication Protocol | Official | ||
| 3424 | TCP | Xware xTrm Communication Protocol over SSL | Official | ||
| 3478 | TCP | UDP | STUN, a protocol for NAT traversal | Official | |
| 3478 | TCP | UDP | TURN, a protocol for NAT traversal | Official | |
| 3483 | UDP | Slim Devices discovery protocol | Official | ||
| 3483 | TCP | Slim Devices SlimProto protocol | Official | ||
| 3516 | TCP | UDP | Smartcard Port | Official | |
| 3527 | UDP | Microsoft Message Queuing | Official | ||
| 3535 | TCP | SMTP alternate | Unofficial | ||
| 3537 | TCP | UDP | ni-visa-remote | Unofficial | |
| 3544 | UDP | Teredo tunneling | Official | ||
| 3605 | UDP | ComCam IO Port | Official | ||
| 3606 | TCP | UDP | Splitlock Server | Official | |
| 3632 | TCP | distributed compiler | Official | ||
| 3689 | TCP | Digital Audio Access Protocol (DAAP)—used by Apple’s iTunes and AirPort Express | Official | ||
| 3690 | TCP | UDP | Subversion (SVN) version control system | Official | |
| 3702 | TCP | UDP | Web Services Dynamic Discovery (WS-Discovery), used by various components of Windows Vista | Official | |
| 3723 | TCP | UDP | Used by many Battle.net Blizzard games (Diablo II, Warcraft II, Warcraft III, StarCraft) | Unofficial | |
| 3724 | TCP | World of Warcraft Online gaming MMORPG | Official | ||
| 3724 | TCP | Club Penguin Disney online game for kids | Unofficial | ||
| 3724 | UDP | World of Warcraft Online gaming MMORPG | Official | ||
| 3784 | TCP | UDP | Ventrilo VoIP program used by Ventrilo | Unofficial | |
| 3785 | UDP | Ventrilo VoIP program used by Ventrilo | Unofficial | ||
| 3799 | UDP | IETF RADIUS Change of Authorization | Unofficial | ||
| 3800 | TCP | Used by HGG programs | Unofficial | ||
| 3880 | TCP | UDP | IGRS | Official | |
| 3868 | TCP | SCTP | Diameter base protocol (RFC 3588) | Official | |
| 3872 | TCP | Oracle Management Remote Agent | Unofficial | ||
| 3899 | TCP | Remote Administrator | Unofficial | ||
| 3900 | TCP | udt_os, IBM UniData UDT OS | Official | ||
| 3945 | TCP | UDP | EMCADS service, a Giritech product used by G/On | Official | |
| 3978 | TCP | UDP | OpenTTD game (masterserver and content service) | Unofficial | |
| 3979 | TCP | UDP | OpenTTD game | Unofficial | |
| 3999 | TCP | UDP | Norman distributed scanning service | Official | |
| 4000 | TCP | UDP | Diablo II game | Unofficial | |
| 4001 | TCP | Microsoft Ants game | Unofficial | ||
| 4007 | TCP | PrintBuzzer printer monitoring socket server | Unofficial | ||
| 4018 | TCP | UDP | protocol information and warnings | Official | |
| 4069 | UDP | Minger Email Address Verification Protocol | Official | ||
| 4089 | TCP | UDP | OpenCORE Remote Control Service | Official | |
| 4093 | TCP | UDP | PxPlus Client server interface ProvideX | Official | |
| 4096 | TCP | UDP | Ascom Timeplex BRE (Bridge Relay Element) | Official | |
| 4100 | WatchGuard Authentication Applet—default | Unofficial | |||
| 4111 | TCP | Xgrid | Official | ||
| 4116 | TCP | UDP | Smartcard-TLS | Official | |
| 4125 | TCP | Microsoft Remote Web Workplace administration | Unofficial | ||
| 4172 | TCP | UDP | Teradici PCoIP | Official | |
| 4201 | TCP | TinyMUD and various derivatives | Unofficial | ||
| 4226 | TCP | UDP | Aleph One (game) | Unofficial | |
| 4224 | TCP | Cisco Audio Session Tunneling | Unofficial | ||
| 4321 | TCP | Referral Whois (RWhois) Protocol | Official | ||
| 4323 | UDP | Lincoln Electric's ArcLink/XT | Unofficial | ||
| 4433-4436 | TCP | Axence nVision | Unofficial | ||
| 4500 | UDP | IPSec NAT Traversal (RFC 3947) | Official | ||
| 4534 | UDP | Armagetron Advanced default server port | Unofficial | ||
| 4567 | TCP | Sinatra default server port in development mode (HTTP) | Unofficial | ||
| 4569 | UDP | Inter-Asterisk eXchange (IAX2) | Official | ||
| 4610–4640 | TCP | QualiSystems TestShell Suite Services | Unofficial | ||
| 4662 | UDP | OrbitNet Message Service | Official | ||
| 4662 | TCP | OrbitNet Message Service | Official | ||
| 4662 | TCP | Default for older versions of eMule | Unofficial | ||
| 4664 | TCP | Google Desktop Search | Unofficial | ||
| 4672 | UDP | Default for older versions of eMule | Unofficial | ||
| 4711 | TCP | eMule optional web interface | Unofficial | ||
| 4711 | TCP | McAfee Web Gateway 7 - Default GUI Port HTTP | Unofficial | ||
| 4712 | TCP | McAfee Web Gateway 7 - Default GUI Port HTTPS | Unofficial | ||
| 4728 | TCP | Computer Associates Desktop and Server Management (DMP)/Port Multiplexer | Official | ||
| 4747 | TCP | Apprentice | Unofficial | ||
| 4750 | TCP | BladeLogic Agent | Unofficial | ||
| 4840 | TCP | UDP | OPC UA TCP Protocol for OPC Unified Architecture from OPC Foundation | Official | |
| 4843 | TCP | UDP | OPC UA TCP Protocol over TLS/SSL for OPC Unified Architecture from OPC Foundation | Official | |
| 4847 | TCP | UDP | Web Fresh Communication, Quadrion Software & Odorless Entertainment | Official | |
| 4894 | TCP | UDP | LysKOM Protocol A | Official | |
| 4899 | TCP | UDP | Radmin remote administration tool (program sometimes used by a Trojan horse) | Official | |
| 4949 | TCP | Munin Resource Monitoring Tool | Official | ||
| 4950 | TCP | UDP | Cylon Controls UC32 Communications Port | Official | |
| 4982 | TCP | UDP | Solar Data Log (JK client app for PV solar inverters ) | Unofficial | |
| 4993 | TCP | UDP | Home FTP Server web Interface Default Port | Unofficial | |
| 5000 | TCP | commplex-main | Official | ||
| 5000 | TCP | UPnP—Windows network device interoperability | Unofficial | ||
| 5000 | TCP | VTun—VPN Software | Unofficial | ||
| 5000 | UDP | FlightGear multiplayer | Unofficial | ||
| 5000 | UDP | VTun—VPN Software | Unofficial | ||
| 5001 | TCP | commplex-link | Official | ||
| 5001 | TCP | Slingbox and Slingplayer | Unofficial | ||
| 5001 | TCP | Iperf (Tool for measuring TCP and UDP bandwidth performance) | Unofficial | ||
| 5001 | UDP | Iperf (Tool for measuring TCP and UDP bandwidth performance) | Unofficial | ||
| 5002 | TCP | SOLICARD ARX | Unofficial | ||
| 5003 | TCP | UDP | FileMaker | Official | |
| 5004 | TCP | UDP | RTP (Real-time Transport Protocol) media data (RFC 3551, RFC 4571) | Official | |
| 5004 | DCCP | RTP (Real-time Transport Protocol) media data (RFC 3551, RFC 4571) | Official | ||
| 5005 | TCP | UDP | RTP (Real-time Transport Protocol) control protocol (RFC 3551, RFC 4571) | Official | |
| 5005 | DCCP | RTP (Real-time Transport Protocol) control protocol (RFC 3551, RFC 4571) | Official | ||
| 5029 | TCP | Sonic Robo Blast 2 : Multiplayer | Unofficial | ||
| 5031 | TCP | UDP | AVM CAPI-over-TCP (ISDN over Ethernet tunneling) | Unofficial | |
| 5050 | TCP | Yahoo! Messenger | Unofficial | ||
| 5051 | TCP | ita-agent Symantec Intruder Alert | Official | ||
| 5060 | TCP | UDP | Session Initiation Protocol (SIP) | Official | |
| 5061 | TCP | Session Initiation Protocol (SIP) over TLS | Official | ||
| 5070 | TCP | Binary Floor Control Protocol (BFCP), published as RFC 4582, is a protocol that allows for an additional video channel (known as the content channel) alongside the main video channel in a video-conferencing call that uses SIP. Also used for Session Initiation Protocol (SIP) preferred port for PUBLISH on SIP Trunk to Cisco Unified Presence Server (CUPS) | Unofficial | ||
| 5082 | TCP | UDP | Qpur Communication Protocol | Official | |
| 5083 | TCP | UDP | Qpur File Protocol | Official | |
| 5084 | TCP | UDP | EPCglobal Low Level Reader Protocol (LLRP) | Official | |
| 5085 | TCP | UDP | EPCglobal Low Level Reader Protocol (LLRP) over TLS | Official | |
| 5093 | UDP | SafeNet, Inc Sentinel LM, Sentinel RMS, License Manager, Client-to-Server | Official | ||
| 5099 | TCP | UDP | SafeNet, Inc Sentinel LM, Sentinel RMS, License Manager, Server-to-Server | Official | |
| 5104 | TCP | IBM Tivoli Framework NetCOOL/Impact[58] HTTP Service | Unofficial | ||
| 5106 | TCP | A-Talk Common connection | Unofficial | ||
| 5107 | TCP | A-Talk Remote server connection | Unofficial | ||
| 5108 | TCP | VPOP3 Mail Server Webmail | Unofficial | ||
| 5109 | TCP | UDP | VPOP3 Mail Server Status | Unofficial | |
| 5110 | TCP | ProRat Server | Unofficial | ||
| 5121 | TCP | Neverwinter Nights | Unofficial | ||
| 5150 | TCP | UDP | ATMP Ascend Tunnel Management Protocol[59] | Official | |
| 5150 | TCP | UDP | Malware Cerberus RAT | Unofficial | |
| 5151 | TCP | ESRI SDE Instance | Official | ||
| 5151 | UDP | ESRI SDE Remote Start | Official | ||
| 5154 | TCP | UDP | BZFlag | Official | |
| 5176 | TCP | ConsoleWorks default UI interface | Unofficial | ||
| 5190 | TCP | ICQ and AOL Instant Messenger | Official | ||
| 5222 | TCP | Extensible Messaging and Presence Protocol (XMPP) client connection[60][61] | Official | ||
| 5223 | TCP | Extensible Messaging and Presence Protocol (XMPP) client connection over SSL | Unofficial | ||
| 5228 | TCP | HP Virtual Room Service | Official | ||
| 5228 | TCP | Android Market | Unofficial | ||
| 5246 | UDP | Control And Provisioning of Wireless Access Points (CAPWAP) CAPWAP control | Official | ||
| 5247 | UDP | Control And Provisioning of Wireless Access Points (CAPWAP) CAPWAP data | Official | ||
| 5269 | TCP | Extensible Messaging and Presence Protocol (XMPP) server connection | Official | ||
| 5280 | TCP | Extensible Messaging and Presence Protocol (XMPP) XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH) | Official | ||
| 5281 | TCP | Undo License Manager | Official | ||
| 5281 | TCP | Extensible Messaging and Presence Protocol (XMPP) XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH) with SSL | Unofficial | ||
| 5298 | TCP | UDP | Extensible Messaging and Presence Protocol (XMPP) XEP-0174: Serverless Messaging | Official | |
| 5310 | TCP | UDP | Ginever.net data communication port | Unofficial | |
| 5311 | TCP | UDP | Ginever.net data communication port | Unofficial | |
| 5312 | TCP | UDP | Ginever.net data communication port | Unofficial | |
| 5313 | TCP | UDP | Ginever.net data communication port | Unofficial | |
| 5314 | TCP | UDP | Ginever.net data communication port | Unofficial | |
| 5315 | TCP | UDP | Ginever.net data communication port | Unofficial | |
| 5349 | TCP | STUN, a protocol for NAT traversal (UDP is reserved) | Official | ||
| 5349 | TCP | TURN, a protocol for NAT traversal (UDP is reserved) | Official | ||
| 5351 | TCP | UDP | NAT Port Mapping Protocol—client-requested configuration for inbound connections through network address translators | Official | |
| 5353 | UDP | Multicast DNS (mDNS) | Official | ||
| 5355 | TCP | UDP | LLMNR—Link-Local Multicast Name Resolution, allows hosts to perform name resolution for hosts on the same local link (only provided by Windows Vista and Server 2008) | Official | |
| 5357 | TCP | UDP | Web Services for Devices (WSDAPI) (only provided by Windows Vista, Windows 7 and Server 2008) | Unofficial | |
| 5358 | TCP | UDP | WSDAPI Applications to Use a Secure Channel (only provided by Windows Vista, Windows 7 and Server 2008) | Unofficial | |
| 5402 | TCP | UDP | mftp, Stratacache OmniCast content delivery system MFTP file sharing protocol | Official | |
| 5405 | TCP | UDP | NetSupport Manager | Official | |
| 5412 | TCP | UDP | IBM Rational Synergy (Telelogic_Synergy) (Continuus CM) Message Router | Official | |
| 5421 | TCP | UDP | NetSupport Manager | Official | |
| 5432 | TCP | UDP | PostgreSQL database system | Official | |
| 5433 | TCP | Bouwsoft file/webserver <http://www.bouwsoft.be> | Unofficial | ||
| 5445 | UDP | Cisco Unified Video Advantage | Unofficial | ||
| 5450 | TCP | OSIsoft PI Server Client Access | Unofficial | ||
| 5457 | TCP | OSIsoft PI Asset Framework Client Access | Unofficial | ||
| 5458 | TCP | OSIsoft PI Notifications Client Access | Unofficial | ||
| 5495 | TCP | Applix TM1 Admin server | Unofficial | ||
| 5498 | TCP | Hotline tracker server connection | Unofficial | ||
| 5499 | UDP | Hotline tracker server discovery | Unofficial | ||
| 5500 | TCP | VNC remote desktop protocol—for incoming listening viewer, Hotline control connection | Unofficial | ||
| 5501 | TCP | Hotline file transfer connection | Unofficial | ||
| 5517 | TCP | Setiqueue Proxy server client for SETI@Home project | Unofficial | ||
| 5550 | TCP | Hewlett-Packard Data Protector | Unofficial | ||
| 5555 | TCP | Freeciv versions up to 2.0, Hewlett-Packard Data Protector, McAfee EndPoint Encryption Database Server, SAP, Default for Microsoft Dynamics CRM 4.0 | Unofficial | ||
| 5556 | TCP | UDP | Freeciv | Official | |
| 5591 | TCP | Default for Tidal Enterprise Scheduler master-Socket used for communication between Agent-to-Master, though can be changed | Unofficial | ||
| 5631 | TCP | pcANYWHEREdata, Symantec pcAnywhere (version 7.52 and later data | Official | ||
| 5632 | UDP | pcANYWHEREstat, Symantec pcAnywhere (version 7.52 and later) status | Official | ||
| 5656 | TCP | IBM Sametime p2p file transfer | Unofficial | ||
| 5666 | TCP | NRPE (Nagios) | Unofficial | ||
| 5667 | TCP | NSCA (Nagios) | Unofficial | ||
| 5678 | UDP | Mikrotik RouterOS Neighbor Discovery Protocol (MNDP) | Unofficial | ||
| 5721 | TCP | UDP | Kaseya | Unofficial | |
| 5723 | TCP | Operations Manager | Unofficial | ||
| 5741 | TCP | UDP | IDA Discover Port 1 | Official | |
| 5742 | TCP | UDP | IDA Discover Port 2 | Official | |
| 5800 | TCP | VNC remote desktop protocol—for use over HTTP | Unofficial | ||
| 5814 | TCP | UDP | Hewlett-Packard Support Automation (HP OpenView Self-Healing Services) | Official | |
| 5850 | TCP | COMIT SE (PCR) | Unofficial | ||
| 5852 | TCP | Adeona client: communications to OpenDHT | Unofficial | ||
| 5900 | TCP | UDP | Virtual Network Computing (VNC) remote desktop protocol (used by Apple Remote Desktop and others) | Official | |
| 5912 | TCP | Default for Tidal Enterprise Scheduler agent-Socket used for communication between Master-to-Agent, though can be changed | Unofficial | ||
| 5938 | TCP | UDP | TeamViewer remote desktop protocol | Unofficial | |
| 5984 | TCP | UDP | CouchDB database server | Official | |
| 5999 | TCP | CVSup file update tool | Official | ||
| 6000 | TCP | X11—used between an X client and server over the network | Official | ||
| 6001 | UDP | X11—used between an X client and server over the network | Official | ||
| 6005 | TCP | Default for BMC Software Control-M/Server—Socket used for communication between Control-M processes—though often changed during installation | Official | ||
| 6005 | TCP | Default for Camfrog Chat & Cam Client http://www.camfrog.com | Unofficial | ||
| 6050 | TCP | Brightstor Arcserve Backup | Unofficial | ||
| 6050 | TCP | Nortel Software | Unofficial | ||
| 6051 | TCP | Brightstor Arcserve Backup | Unofficial | ||
| 6072 | TCP | iOperator Protocol Signal Port | Unofficial | ||
| 6086 | TCP | PDTP—FTP like file server in a P2P network | Official | ||
| 6100 | TCP | Vizrt System | Unofficial | ||
| 6100 | TCP | Ventrilo This is the authentication port that must be allowed outbound for version 3 of Ventrilo | Official | ||
| 6101 | TCP | Backup Exec Agent Browser | Unofficial | ||
| 6110 | TCP | UDP | softcm, HP Softbench CM | Official | |
| 6111 | TCP | UDP | spc, HP Softbench Sub-Process Control | Official | |
| 6112 | UDP | "dtspcd"—a network daemon that accepts requests from clients to execute commands and launch applications remotely | Official | ||
| 6112 | TCP | "dtspcd"—a network daemon that accepts requests from clients to execute commands and launch applications remotely | Official | ||
| 6112 | TCP | Blizzard's Battle.net gaming service, ArenaNet gaming service, Relic gaming sercive | Unofficial | ||
| 6112 | TCP | Club Penguin Disney online game for kids | Unofficial | ||
| 6113 | TCP | Club Penguin Disney online game for kids | Unofficial | ||
| 6129 | TCP | DameWare Remote Control | Official | ||
| 6257 | UDP | WinMX (see also 6699) | Unofficial | ||
| 6260 | TCP | UDP | planet M.U.L.E. | Unofficial | |
| 6262 | TCP | Sybase Advantage Database Server | Unofficial | ||
| 6343 | UDP | SFlow, sFlow traffic monitoring | Official | ||
| 6346 | TCP | UDP | gnutella-svc, gnutella (FrostWire, Limewire, Shareaza, etc.) | Official | |
| 6347 | TCP | UDP | gnutella-rtr, Gnutella alternate | Official | |
| 6350 | TCP | UDP | App Discovery and Access Protocol | Official | |
| 6389 | TCP | EMC CLARiiON | Unofficial | ||
| 6432 | TCP | PgBouncer - A connection pooler for PostgreSQL | Official | ||
| 6444 | TCP | UDP | Sun Grid Engine—Qmaster Service | Official | |
| 6445 | TCP | UDP | Sun Grid Engine—Execution Service | Official | |
| 6502 | TCP | UDP | Netop Business Solutions - NetOp Remote Control | Unofficial | |
| 6503 | UDP | Netop Business Solutions - NetOp School | Unofficial | ||
| 6522 | TCP | Gobby (and other libobby-based software) | Unofficial | ||
| 6523 | TCP | Gobby 0.5 (and other libinfinity-based software) | Unofficial | ||
| 6543 | UDP | Paradigm Research & Development Jetnet[67] default | Unofficial | ||
| 6566 | TCP | SANE (Scanner Access Now Easy)—SANE network scanner daemon | Unofficial | ||
| 6571 | Windows Live FolderShare client | Unofficial | |||
| 6600 | TCP | Music Playing Daemon (MPD) | Unofficial | ||
| 6619 | TCP | UDP | odette-ftps, Odette File Transfer Protocol (OFTP) over TLS/SSL | Official | |
| 6646 | UDP | McAfee Network Agent | Unofficial | ||
| 6660–6664 | TCP | Internet Relay Chat (IRC) | Unofficial | ||
| 6665–6669 | TCP | Internet Relay Chat (IRC) | Official | ||
| 6679 | TCP | UDP | Osorno Automation Protocol (OSAUT) | Official | |
| 6679 | TCP | IRC SSL (Secure Internet Relay Chat)—often used | Unofficial | ||
| 6697 | TCP | IRC SSL (Secure Internet Relay Chat)—often used | Unofficial | ||
| 6699 | TCP | WinMX (see also 6257) | Unofficial | ||
| 6702 | TCP | Default for Tidal Enterprise Scheduler client-Socket used for communication between Client-to-Master, though can be changed | Unofficial | ||
| 6771 | UDP | Polycom server broadcast | Unofficial | ||
| 6789 | TCP | Datalogger Support Software Campbell Scientific Loggernet Software | Unofficial | ||
| 6881–6887 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 6888 | TCP | UDP | MUSE | Official | |
| 6888 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 6889–6890 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 6891–6900 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 6891–6900 | TCP | UDP | Windows Live Messenger (File transfer) | Unofficial | |
| 6901 | TCP | UDP | Windows Live Messenger (Voice) | Unofficial | |
| 6901 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 6902–6968 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 6969 | TCP | UDP | acmsoda | Official | |
| 6969 | TCP | BitTorrent tracker | Unofficial | ||
| 6970–6999 | TCP | UDP | BitTorrent part of full range of ports used most often | Unofficial | |
| 7000 | TCP | Default for Vuze's built in HTTPS Bittorrent Tracker | Unofficial | ||
| 7001 | TCP | Default for BEA WebLogic Server's HTTP server, though often changed during installation | Unofficial | ||
| 7002 | TCP | Default for BEA WebLogic Server's HTTPS server, though often changed during installation | Unofficial | ||
| 7005 | TCP | Default for BMC Software Control-M/Server and Control-M/Agent for Agent-to-Server, though often changed during installation | Unofficial | ||
| 7006 | TCP | Default for BMC Software Control-M/Server and Control-M/Agent for Server-to-Agent, though often changed during installation | Unofficial | ||
| 7010 | TCP | Default for Cisco AON AMC (AON Management Console) [68] | Unofficial | ||
| 7022 | TCP | Database mirroring endpoints | Unofficial | ||
| 7023 | UDP | Bryan Wilcutt T2-NMCS Protocol for SatCom Modems | Official | ||
| 7025 | TCP | Zimbra LMTP [mailbox]—local mail delivery | Unofficial | ||
| 7047 | TCP | Zimbra conversion server | Unofficial | ||
| 7133 | TCP | Enemy Territory: Quake Wars | Unofficial | ||
| 7144 | TCP | Peercast | Unofficial | ||
| 7145 | TCP | Peercast | Unofficial | ||
| 7171 | TCP | Tibia | Unofficial | ||
| 7306 | TCP | Zimbra mysql [mailbox] | Unofficial | ||
| 7307 | TCP | Zimbra mysql [logger] | Unofficial | ||
| 7312 | UDP | Sibelius License Server | Unofficial | ||
| 7400 | TCP | UDP | RTPS (Real Time Publish Subscribe) DDS Discovery | Official | |
| 7401 | TCP | UDP | RTPS (Real Time Publish Subscribe) DDS User-Traffic | Official | |
| 7402 | TCP | UDP | RTPS (Real Time Publish Subscribe) DDS Meta-Traffic | Official | |
| 7473 | TCP | UDP | Rise: The Vieneo Province | Official | |
| 7547 | TCP | UDP | CPE WAN Management Protocol Technical Report 069 | Official | |
| 7615 | TCP | ISL Online communication protocol | Unofficial | ||
| 7670 | TCP | BrettspielWelt BSW Boardgame Portal | Unofficial | ||
| 7676 | TCP | Aqumin AlphaVision Remote Command Interface | Unofficial | ||
| 7700 | UDP | P2P DC (RedHub) | Unofficial | ||
| 7707 | UDP | Killing Floor | Unofficial | ||
| 7708 | UDP | Killing Floor | Unofficial | ||
| 7717 | UDP | Killing Floor | Unofficial | ||
| 7777 | TCP | iChat server file transfer proxy | Unofficial | ||
| 7777 | TCP | Oracle Cluster File System 2 | Unofficial | ||
| 7777 | TCP | Windows backdoor program tini.exe default | Unofficial | ||
| 7777 | TCP | Xivio.com Chat Server Interface | Unofficial | ||
| 7777 | TCP | Terraria default server | Unofficial | ||
| 7778 | TCP | Bad Trip MUD | Unofficial | ||
| 7777-7788 | UDP | Unreal Tournament series default server | Unofficial | ||
| 7777-7788 | TCP | Unreal Tournament series default server | Unofficial | ||
| 7787-7788 | TCP | GFI EventsManager 7 & 8 | Official | ||
| 7831 | TCP | Default used by Smartlaunch Internet Cafe Administration software | Unofficial | ||
| 7880 | TCP | UDP | PowerSchool Gradebook Server | Unofficial | |
| 7915 | TCP | Default for YSFlight server | Unofficial | ||
| 7935 | TCP | Fixed port used for Adobe Flash Debug Player to communicate with a debugger (Flash IDE, Flex Builder or fdb). | Unofficial | ||
| 7937-9936 | TCP | UDP | EMC2 (Legato) Networker or Sun Solcitice Backup | Official | |
| 8000 | UDP | iRDMI (Intel Remote Desktop Management Interface)[72]—sometimes erroneously used instead of port 8080 | Official | ||
| 8000 | TCP | iRDMI (Intel Remote Desktop Management Interface)[72]—sometimes erroneously used instead of port 8080 | Official | ||
| 8000 | TCP | Commonly used for internet radio streams such as those using SHOUTcast | Unofficial | ||
| 8001 | TCP | Commonly used for internet radio streams such as those using SHOUTcast | Unofficial | ||
| 8002 | TCP | Cisco Systems Unified Call Manager Intercluster | Unofficial | ||
| 8008 | TCP | HTTP Alternate | Official | ||
| 8008 | TCP | IBM HTTP Server administration default | Unofficial | ||
| 8009 | TCP | ajp13—Apache JServ Protocol AJP Connector | Unofficial | ||
| 8010 | TCP | XMPP File transfers | Unofficial | ||
| 8011-8013 | TCP | HTTP/TCP Symon Communications Event and Query Engine | Unofficial | ||
| 8014 | TCP | HTTP/TCP Symon Communications Event and Query Engine | Unofficial | ||
| 8014 | TCP | Perseus SDR Receiver default remote connection port | Unofficial | ||
| 8014 | UDP | Perseus SDR Receiver default remote connection port | Unofficial | ||
| 8074 | TCP | Gadu-Gadu | Unofficial | ||
| 8075 | TCP | Killing Floor | Unofficial | ||
| 8078 | TCP | UDP | Default port for most Endless Online-based servers | Unofficial | |
| 8080 | TCP | HTTP alternate (http_alt)—commonly used for Web proxy and caching server, or for running a Web server as a non-root user | Official | ||
| 8080 | TCP | Apache Tomcat | Unofficial | ||
| 8080 | UDP | FilePhile Master/Relay | Unofficial | ||
| 8081 | TCP | HTTP alternate, VibeStreamer, e.g. McAfee ePolicy Orchestrator (ePO) | Unofficial | ||
| 8086 | TCP | HELM Web Host Automation Windows Control Panel | Unofficial | ||
| 8086 | TCP | Kaspersky AV Control Center | Unofficial | ||
| 8087 | TCP | Hosting Accelerator Control Panel | Unofficial | ||
| 8087 | TCP | Parallels Plesk Control Panel | Unofficial | ||
| 8087 | UDP | Kaspersky AV Control Center | Unofficial | ||
| 8088 | TCP | Asterisk (PBX) Web Configuration utility (GUI Addon) | Unofficial | ||
| 8089 | TCP | Splunk Daemon | Unofficial | ||
| 8090 | TCP | HTTP Alternate (http_alt_alt)—used as an alternative to port 8080 | Unofficial | ||
| 8100 | TCP | Console Gateway License Verification | Unofficial | ||
| 8116 | UDP | Check Point Cluster Control Protocol | Unofficial | ||
| 8118 | TCP | Privoxy—advertisement-filtering Web proxy | Official | ||
| 8123 | TCP | Polipo Web proxy | Official | ||
| 8192 | TCP | Sophos Remote Management System | Unofficial | ||
| 8193 | TCP | Sophos Remote Management System | Unofficial | ||
| 8194 | TCP | Sophos Remote Management System | Unofficial | ||
| 8200 | TCP | GoToMyPC | Unofficial | ||
| 8222 | TCP | VMware Server Management User Interface (insecure Web interface).[74] See also port 8333 | Unofficial | ||
| 8243 | TCP | UDP | HTTPS listener for Apache Synapse | Official | |
| 8280 | TCP | UDP | HTTP listener for Apache Synapse | Official | |
| 8291 | TCP | Winbox—Default on a MikroTik RouterOS for a Windows application used to administer MikroTik RouterOS | Unofficial | ||
| 8303 | UDP | Teeworlds Server | Unofficial | ||
| 8332 | TCP | Bitcoin JSON-RPC server | Unofficial | ||
| 8333 | TCP | Bitcoin | Unofficial | ||
| 8333 | TCP | VMware Server Management User Interface (secure Web interface). See also port 8222 | Unofficial | ||
| 8400 | TCP | UDP | cvp, Commvault Unified Data Management | Official | |
| 8442 | TCP | UDP | CyBro A-bus, Cybrotech Ltd. | Official | |
| 8443 | TCP | SW Soft Plesk Control Panel, Apache Tomcat SSL, Promise WebPAM SSL, McAfee ePolicy Orchestrator (ePO) | Unofficial | ||
| 8484 | TCP | UDP | MapleStory | Unofficial | |
| 8500 | TCP | UDP | ColdFusion Macromedia/Adobe ColdFusion default and Duke Nukem 3D—default | Unofficial | |
| 8501 | TCP | [4] DukesterX —default | Unofficial | ||
| 8601 | TCP | Wavestore CCTV protocol | Unofficial | ||
| 8602 | TCP | UDP | Wavestore Notification protocol | Unofficial | |
| 8642 | TCP | Lotus Traveller | Unofficial | ||
| 8691 | TCP | Ultra Fractal default server port for distributing calculations over network computers | Unofficial | ||
| 8701 | UDP | SoftPerfect Bandwidth Manager | Unofficial | ||
| 8702 | UDP | SoftPerfect Bandwidth Manager | Unofficial | ||
| 8767 | UDP | TeamSpeak—default | Unofficial | ||
| 8768 | UDP | TeamSpeak—alternate | Unofficial | ||
| 8840 | TCP | Opera Unite server | Unofficial | ||
| 8880 | UDP | cddbp-alt, CD DataBase (CDDB) protocol (CDDBP) alternate | Official | ||
| 8880 | TCP | cddbp-alt, CD DataBase (CDDB) protocol (CDDBP) alternate | Official | ||
| 8880 | TCP | WebSphere Application Server SOAP connector default | Unofficial | ||
| 8880 | TCP | Win Media Streamer to Server SOAP connector default | Unofficial | ||
| 8881 | TCP | Atlasz Informatics Research Ltd Secure Application Server | Unofficial | ||
| 8882 | TCP | Atlasz Informatics Research Ltd Secure Application Server | Unofficial | ||
| 8883 | TCP | UDP | Secure MQ Telemetry Transport (MQTT over SSL) | Official | |
| 8887 | TCP | HyperVM HTTP | Official | ||
| 8888 | TCP | HyperVM HTTPS | Official | ||
| 8888 | TCP | Freenet HTTP | Unofficial | ||
| 8888 | UDP | NewsEDGE server | Official | ||
| 8888 | TCP | NewsEDGE server | Official | ||
| 8888 | TCP | Sun Answerbook dwhttpd server (deprecated by docs.sun.com) | Unofficial | ||
| 8888 | TCP | GNUmp3d HTTP music streaming and Web interface | Unofficial | ||
| 8888 | TCP | LoLo Catcher HTTP Web interface (www.optiform.com) | Unofficial | ||
| 8888 | TCP | D2GS Admin Console Telnet administration console for D2GS servers (Diablo 2) | Unofficial | ||
| 8888 | TCP | Earthland Relams 2 Server (AU1_2) | Unofficial | ||
| 8888 | TCP | MAMP Server | Unofficial | ||
| 8889 | TCP | MAMP Server | Unofficial | ||
| 8889 | TCP | Earthland Relams 2 Server (AU1_1) | Unofficial | ||
| 8983 | TCP | Default for Apache Solr 1.4 | Unofficial | ||
| 9000 | TCP | Buffalo LinkSystem Web access | Unofficial | ||
| 9000 | TCP | DBGp | Unofficial | ||
| 9000 | TCP | SqueezeCenter web server & streaming | Unofficial | ||
| 9000 | UDP | UDPCast | Unofficial | ||
| 9001 | TCP | UDP | ETL Service Manager | Official | |
| 9001 | Microsoft Sharepoint Authoring Environment | Unofficial | |||
| 9001 | cisco-xremote router configuration | Unofficial | |||
| 9001 | Tor network default | Unofficial | |||
| 9001 | TCP | DBGp Proxy | Unofficial | ||
| 9009 | TCP | UDP | Pichat Server—Peer to peer chat software | Official | |
| 9010 | TCP | TISERVICEMANAGEMENT Numara Track-It! | Unofficial | ||
| 9020 | TCP | WiT WiT Services | Official | ||
| 9025 | TCP | WiT WiT Services | Official | ||
| 9030 | TCP | Tor often used | Unofficial | ||
| 9043 | TCP | WebSphere Application Server Administration Console secure | Unofficial | ||
| 9050 | TCP | Tor | Unofficial | ||
| 9051 | TCP | Tor | Unofficial | ||
| 9060 | TCP | WebSphere Application Server Administration Console | Unofficial | ||
| 9080 | UDP | glrpc, Groove Collaboration software GLRPC | Official | ||
| 9080 | TCP | glrpc, Groove Collaboration software GLRPC | Official | ||
| 9080 | TCP | WebSphere Application Server HTTP Transport (port 1) default | Unofficial | ||
| 9090 | TCP | Webwasher, Secure Web, McAfee Web Gateway - Default Proxy Port | Unofficial | ||
| 9090 | TCP | Openfire Administration Console | Unofficial | ||
| 9090 | TCP | SqueezeCenter control (CLI) | Unofficial | ||
| 9091 | TCP | Openfire Administration Console (SSL Secured) | Unofficial | ||
| 9091 | TCP | Transmission (BitTorrent client) Web Interface | Unofficial | ||
| 9100 | TCP | PDL Data Stream | Official | ||
| 9101 | TCP | UDP | Bacula Director | Official | |
| 9102 | TCP | UDP | Bacula File Daemon | Official | |
| 9103 | TCP | UDP | Bacula Storage Daemon | Official | |
| 9105 | TCP | UDP | Xadmin Control Daemon | Official | |
| 9106 | TCP | UDP | Astergate Control Daemon | Official | |
| 9107 | TCP | Astergate-FAX Control Daemon | Official | ||
| 9110 | UDP | SSMP Message protocol | Unofficial | ||
| 9119 | TCP | UDP | MXit Instant Messenger | Official | |
| 9191 | TCP | Catamount Software - PocketMoney Sync | Unofficial | ||
| 9293 | TCP | Sony PlayStation RemotePlay | Unofficial | ||
| 9300 | TCP | IBM Cognos 8 SOAP Business Intelligence and Performance Management | Unofficial | ||
| 9303 | UDP | D-Link Shareport Share storage and MFP printers | Unofficial | ||
| 9306 | TCP | Sphinx Native API | Official | ||
| 9312 | TCP | Sphinx SphinxQL | Official | ||
| 9418 | TCP | UDP | git, Git pack transfer service | Official | |
| 9420 | TCP | MooseFS distributed file system—master server to chunk servers | Unofficial | ||
| 9421 | TCP | MooseFS distributed file system—master server to clients | Unofficial | ||
| 9422 | TCP | MooseFS distributed file system—chunk servers to clients | Unofficial | ||
| 9535 | TCP | UDP | mngsuite, LANDesk Management Suite Remote Control | Official | |
| 9536 | TCP | UDP | laes-bf, IP Fabrics Surveillance buffering function | Official | |
| 9561 | TCP | UDP | Network Time System Server | Unofficial | |
| 9600 | UDP | Omron FINS, OMRON FINS PLC communication | Official | ||
| 9675 | TCP | UDP | Spiceworks Desktop, IT Helpdesk Software | Unofficial | |
| 9676 | TCP | UDP | Spiceworks Desktop, IT Helpdesk Software | Unofficial | |
| 9695 | UDP | CCNx | Official | ||
| 9800 | TCP | UDP | WebDAV Source | Official | |
| 9800 | WebCT e-learning portal | Unofficial | |||
| 9875 | TCP | Club Penguin Disney online game for kids | Unofficial | ||
| 9898 | UDP | MonkeyCom | Official | ||
| 9898 | TCP | MonkeyCom | Official | ||
| 9898 | TCP | Tripwire—File Integrity Monitoring Software | Unofficial | ||
| 9987 | UDP | TeamSpeak 3 server default (voice) port (for the conflicting service see the IANA list) | Unofficial | ||
| 9996 | TCP | UDP | The Palace "The Palace" Virtual Reality Chat software.—5 | Official | |
| 9998 | TCP | UDP | The Palace "The Palace" Virtual Reality Chat software.—5 | Official | |
| 9999 | Hydranode—edonkey2000 TELNET control | Unofficial | |||
| 9999 | TCP | Lantronix UDS-10/UDS100 RS-485 to Ethernet Converter TELNET control | Unofficial | ||
| 9999 | Urchin Web Analytics | Unofficial | |||
| 10000 | Webmin—Web-based Linux admin tool | Unofficial | |||
| 10000 | BackupExec | Unofficial | |||
| 10000 | Ericsson Account Manager (avim) | Unofficial | |||
| 10001 | TCP | Lantronix UDS-10/UDS100 RS-485 to Ethernet Converter default | Unofficial | ||
| 10008 | TCP | UDP | Octopus Multiplexer, primary port for the CROMP protocol, which provides a platform-independent means for communication of objects across a network | Official | |
| 10009 | TCP | UDP | Cross Fire, a multiplayer online First Person Shooter | Unofficial | |
| 10010 | TCP | Open Object Rexx (ooRexx) rxapi daemon | Official | ||
| 10017 | AIX,NeXT, HPUX—rexd daemon control | Unofficial | |||
| 10024 | TCP | Zimbra smtp [mta]—to amavis from postfix | Unofficial | ||
| 10025 | TCP | Zimbra smtp [mta]—back to postfix from amavis | Unofficial | ||
| 10050 | TCP | UDP | Zabbix-Agent | Official | |
| 10051 | TCP | UDP | Zabbix-Trapper | Official | |
| 10110 | TCP | UDP | NMEA 0183 Navigational Data. Transport of NMEA 0183 sentences over TCP or UDP | Official | |
| 10113 | TCP | UDP | NetIQ Endpoint | Official | |
| 10114 | TCP | UDP | NetIQ Qcheck | Official | |
| 10115 | TCP | UDP | NetIQ Endpoint | Official | |
| 10116 | TCP | UDP | NetIQ VoIP Assessor | Official | |
| 10200 | TCP | FRISK Software International's fpscand virus scanning daemon for Unix platforms | Unofficial | ||
| 10200 | TCP | FRISK Software International's f-protd virus scanning daemon for Unix platforms | Unofficial | ||
| 10201–10204 | TCP | FRISK Software International's f-protd virus scanning daemon for Unix platforms | Unofficial | ||
| 10308 | Lock-on: Modern Air Combat | Unofficial | |||
| 10480 | SWAT 4 Dedicated Server | Unofficial | |||
| 10823 | UDP | Farming Simulator 2011 Default Server | Unofficial | ||
| 10891 | TCP | Jungle Disk (this port is opened by the Jungle Disk Monitor service on the localhost) | Unofficial | ||
| 11001 | TCP | UDP | metasys ( Johnson Controls Metasys java AC control environment ) | Unofficial | |
| 11211 | memcached | Unofficial | |||
| 11235 | Savage:Battle for Newerth Server Hosting | Unofficial | |||
| 11294 | Blood Quest Online Server | Unofficial | |||
| 11371 | OpenPGP HTTP key server | Official | |||
| 11576 | IPStor Server management communication | Unofficial | |||
| 12010 | TCP | ElevateDB default database port | Unofficial | ||
| 12011 | TCP | Axence nVision | Unofficial | ||
| 12012 | TCP | Axence nVision | Unofficial | ||
| 12012 | TCP | Audition Online Dance Battle, Korea Server—Status/Version Check | Unofficial | ||
| 12012 | UDP | Audition Online Dance Battle, Korea Server—Status/Version Check | Unofficial | ||
| 12013 | TCP | UDP | Audition Online Dance Battle, Korea Server | Unofficial | |
| 12035 | UDP | Linden Lab viewer to sim on SecondLife | Unofficial | ||
| 12222 | UDP | Light Weight Access Point Protocol (LWAPP) LWAPP data (RFC 5412) | Official | ||
| 12223 | UDP | Light Weight Access Point Protocol (LWAPP) LWAPP control (RFC 5412) | Official | ||
| 12345 | NetBus—remote administration tool (often Trojan horse). Also used by NetBuster. Little Fighter 2 (TCP). | Unofficial | |||
| 12489 | TCP | NSClient/NSClient++/NC_Net (Nagios) | Unofficial | ||
| 12975 | TCP | LogMeIn Hamachi (VPN tunnel software; also port 32976)—used to connect to Mediation Server (bibi.hamachi.cc); will attempt to use SSL (TCP port 443) if both 12975 & 32976 fail to connect | Unofficial | ||
| 12998–12999 | UDP | Takenaka RDI Mirror World on SecondLife | Unofficial | ||
| 13000–13050 | UDP | Linden Lab viewer to sim on SecondLife | Unofficial | ||
| 13008 | TCP | UDP | Cross Fire, a multiplayer online First Person Shooter | Unofficial | |
| 13075 | TCP | Default[84] for BMC Software Control-M/Enterprise Manager Corba communication, though often changed during installation | Official | ||
| 13195-13196 | TCP | UDP | Ontolux Ontolux 2D | Unofficial | |
| 13720 | TCP | UDP | Symantec NetBackup—bprd (formerly VERITAS) | Official | |
| 13721 | TCP | UDP | Symantec NetBackup—bpdbm (formerly VERITAS) | Official | |
| 13724 | TCP | UDP | Symantec Network Utility—vnetd (formerly VERITAS) | Official | |
| 13782 | TCP | UDP | Symantec NetBackup—bpcd (formerly VERITAS) | Official | |
| 13783 | TCP | UDP | Symantec VOPIED protocol (formerly VERITAS) | Official | |
| 13785 | TCP | UDP | Symantec NetBackup Database—nbdb (formerly VERITAS) | Official | |
| 13786 | TCP | UDP | Symantec nomdb (formerly VERITAS) | Official | |
| 14439 | TCP | APRS UI-View Amateur Radio[85] UI-WebServer | Unofficial | ||
| 14567 | UDP | Battlefield 1942 and mods | Unofficial | ||
| 15000 | TCP | psyBNC | Unofficial | ||
| 15000 | TCP | Wesnoth | Unofficial | ||
| 15000 | TCP | Kaspersky Network Agent | Unofficial | ||
| 15000 | TCP | hydap, Hypack Hydrographic Software Packages Data Acquisition | Official | ||
| 15000 | UDP | hydap, Hypack Hydrographic Software Packages Data Acquisition | Official | ||
| 15567 | UDP | Battlefield Vietnam and mods | Unofficial | ||
| 15345 | TCP | UDP | XPilot Contact | Official | |
| 16000 | TCP | shroudBNC | Unofficial | ||
| 16080 | TCP | Mac OS X Server Web (HTTP) service with performance cache[86] | Unofficial | ||
| 16200 | TCP | Oracle Universal Content Management Content Server | Unofficial | ||
| 16250 | TCP | Oracle Universal Content Management Inbound Refinery | Unofficial | ||
| 16384 | UDP | Iron Mountain Digital online backup | Unofficial | ||
| 16567 | UDP | Battlefield 2 and mods | Unofficial | ||
| 17500 | TCP | Dropbox LanSync Protocol (db-lsp); used to synchronize file catalogs between Dropbox clients on your local network. | Official | ||
| 17500 | UDP | Dropbox LanSync Discovery (db-lsp-disc); used to synchronize file catalogs between Dropbox clients on your local network; is transmitted to broadcast addresses. | Official | ||
| 18010 | TCP | Super Dancer Online Extreme(SDO-X)—CiB Net Station Malaysia Server | Unofficial | ||
| 18104 | TCP | RAD PDF Service | Official | ||
| 18180 | TCP | DART Reporting server | Unofficial | ||
| 18200 | TCP | UDP | Audition Online Dance Battle, AsiaSoft Thailand Server—Status/Version Check | Unofficial | |
| 18201 | TCP | UDP | Audition Online Dance Battle, AsiaSoft Thailand Server | Unofficial | |
| 18206 | TCP | UDP | Audition Online Dance Battle, AsiaSoft Thailand Server—FAM Database | Unofficial | |
| 18300 | TCP | UDP | Audition Online Dance Battle, AsiaSoft SEA Server—Status/Version Check | Unofficial | |
| 18301 | TCP | UDP | Audition Online Dance Battle, AsiaSoft SEA Server | Unofficial | |
| 18306 | TCP | UDP | Audition Online Dance Battle, AsiaSoft SEA Server—FAM Database | Unofficial | |
| 18333 | TCP | Bitcoin testnet | Unofficial | ||
| 18400 | TCP | UDP | Audition Online Dance Battle, KAIZEN Brazil Server—Status/Version Check | Unofficial | |
| 18401 | TCP | UDP | Audition Online Dance Battle, KAIZEN Brazil Server | Unofficial | |
| 18505 | TCP | UDP | Audition Online Dance Battle, Nexon Server—Status/Version Check | Unofficial | |
| 18506 | TCP | UDP | Audition Online Dance Battle, Nexon Server | Unofficial | |
| 18605 | TCP | UDP | X-BEAT—Status/Version Check | Unofficial | |
| 18606 | TCP | UDP | X-BEAT | Unofficial | |
| 19000 | TCP | UDP | Audition Online Dance Battle, G10/alaplaya Server—Status/Version Check | Unofficial | |
| 19001 | TCP | UDP | Audition Online Dance Battle, G10/alaplaya Server | Unofficial | |
| 19226 | TCP | Panda Software AdminSecure Communication Agent | Unofficial | ||
| 19283 | TCP | UDP | K2 - KeyAuditor & KeyServer, Sassafras Software Inc. Software Asset Management tools | Official | |
| 19294 | TCP | Google Talk Voice and Video connections | Unofficial | ||
| 19295 | UDP | Google Talk Voice and Video connections | Unofficial | ||
| 19302 | UDP | Google Talk Voice and Video connections | Unofficial | ||
| 19315 | TCP | UDP | KeyShadow for K2 - KeyAuditor & KeyServer, Sassafras Software Inc. Software Asset Management tools | Official | |
| 19540 | TCP | UDP | Belkin Network USB Hub | Unofficial | |
| 19638 | TCP | Ensim Control Panel | Unofficial | ||
| 19771 | TCP | UDP | Softros LAN Messenger | Unofficial | |
| 19812 | TCP | 4D database SQL Communication | Unofficial | ||
| 19813 | TCP | 4D database Client Server Communication | Unofficial | ||
| 19814 | TCP | 4D database DB4D Communication | Unofficial | ||
| 19880 | TCP | Softros LAN Messenger | Unofficial | ||
| 19999 | DNP - Secure (Distributed Network Protocol - Secure), a secure version of the protocol used in SCADA systems between communicating RTU's and IED's | Official | |||
| 20000 | DNP (Distributed Network Protocol), a protocol used in SCADA systems between communicating RTU's and IED's | Official | |||
| 20000 | Usermin, Web-based user tool | Unofficial | |||
| 20014 | TCP | DART Reporting server | Unofficial | ||
| 20560 | TCP | UDP | Killing Floor | Unofficial | |
| 20720 | TCP | Symantec i3 Web GUI server | Unofficial | ||
| 21001 | TCP | AMLFilter, AMLFilter Inc. amlf-admin default port | Unofficial | ||
| 21011 | TCP | AMLFilter, AMLFilter Inc. amlf-engine-01 default http port | Unofficial | ||
| 21012 | TCP | AMLFilter, AMLFilter Inc. amlf-engine-01 default https port | Unofficial | ||
| 21021 | TCP | AMLFilter, AMLFilter Inc. amlf-engine-02 default http port | Unofficial | ||
| 21022 | TCP | AMLFilter, AMLFilter Inc. amlf-engine-02 default https port | Unofficial | ||
| 22136 | TCP | FLIR Systems Camera Resource Protocol | Unofficial | ||
| 22222 | TCP | Davis Instruments, WeatherLink IP | Unofficial | ||
| 22347 | TCP | UDP | WibuKey, WIBU-SYSTEMS AG Software protection system | Official | |
| 22349 | TCP | Wolfson Microelectronics, WISCEBridge Debug Protocol | Unofficial | ||
| 22350 | TCP | UDP | CodeMeter, WIBU-SYSTEMS AG Software protection system | Official | |
| 23073 | Soldat Dedicated Server | Unofficial | |||
| 23399 | Skype Default Protocol | Unofficial | |||
| 23513 | Duke Nukem 3D#Source code Duke Nukem Ports | Unofficial | |||
| 24444 | NetBeans integrated development environment | Unofficial | |||
| 24465 | TCP | UDP | Tonido Directory Server for Tonido which is a Personal Web App and P2P platform | Official | |
| 24554 | TCP | UDP | BINKP, Fidonet mail transfers over TCP/IP | Official | |
| 24800 | Synergy: keyboard/mouse sharing software | Unofficial | |||
| 24842 | StepMania: Online: Dance Dance Revolution Simulator | Unofficial | |||
| 25000 | TCP | Teamware Office standard client connection | Official | ||
| 25003 | TCP | Teamware Office client notifier | Official | ||
| 25005 | TCP | Teamware Office message transfer | Official | ||
| 25007 | TCP | Teamware Office MIME Connector | Official | ||
| 25010 | TCP | Teamware Office Agent server | Official | ||
| 25565 | Minecraft Dedicated Server | Unofficial | |||
| 25565 | MySQL Standard MySQL port | Unofficial | |||
| 25826 | UDP | collectd default port | Unofficial | ||
| 25888 | UDP | Xfire (Firewall Report, UDP_IN) IP Address (206.220.40.146) resolves to gameservertracking.xfire.com. Use unknown. | Unofficial | ||
| 25999 | TCP | Xfire | Unofficial | ||
| 26000 | UDP | id Software's Quake server | Official | ||
| 26000 | TCP | id Software's Quake server | Official | ||
| 26000 | TCP | CCP's EVE Online Online gaming MMORPG | Unofficial | ||
| 26900 | TCP | CCP's EVE Online Online gaming MMORPG | Unofficial | ||
| 26901 | TCP | CCP's EVE Online Online gaming MMORPG | Unofficial | ||
| 27000 | UDP | (through 27006) id Software's QuakeWorld master server | Unofficial | ||
| 27000-27009 | TCP | FlexNet Publisher's License server (from the range of default ports) | Unofficial | ||
| 27010 | Source engine dedicated server port | Unofficial | |||
| 27014 | Source engine dedicated server port (rare) | Unofficial | |||
| 27015 | GoldSrc and Source engine dedicated server port | Unofficial | |||
| 27016 | Magicka server port | Unofficial | |||
| 27017 | mongoDB server port | Unofficial | |||
| 27374 | Sub7 default. | Unofficial | |||
| 27500 | UDP | (through 27900) id Software's QuakeWorld | Unofficial | ||
| 27888 | UDP | Kaillera server | Unofficial | ||
| 27900-27901 | Nintendo Wi-Fi Connection | Unofficial | |||
| 27901 | UDP | (through 27910) id Software's Quake II master server | Unofficial | ||
| 27950 | UDP | OpenArena outgoing | Unofficial | ||
| 27960 | UDP | (through 27969) Activision's Enemy Territory and id Software's Quake III Arena, Quake III and Quake Live and some ioquake3 derived games (OpenArena incoming) | Unofficial | ||
| 28000 | Bitfighter Common/default Bitfighter Server | Unofficial | |||
| 28001 | Starsiege: Tribes Common/default Tribes v.1 Server | Unofficial | |||
| 28395 | TCP | www.SmartSystemsLLC.com Used by Smart Sale 5.0 | Unofficial | ||
| 28785 | UDP | Cube 2 Sauerbraten | Unofficial | ||
| 28786 | UDP | Cube 2 Sauerbraten Port 2 | Unofficial | ||
| 28852 | TCP | UDP | Killing Floor | Unofficial | |
| 28910 | Nintendo Wi-Fi Connection | Unofficial | |||
| 28960 | UDP | Call of Duty; Call of Duty: United Offensive; Call of Duty 2; Call of Duty 4: Modern Warfare; Call of Duty: World at War (PC Version) | Unofficial | ||
| 29000 | Perfect World International Used by the Perfect World International Client | Unofficial | |||
| 29900-29901 | Nintendo Wi-Fi Connection | Unofficial | |||
| 29920 | Nintendo Wi-Fi Connection | Unofficial | |||
| 30000 | Pokémon Netbattle | Unofficial | |||
| 30301 | BitTorrent | Unofficial | |||
| 30564 | TCP | Multiplicity: keyboard/mouse/clipboard sharing software | Unofficial | ||
| 30718 | UDP | Lantronix Discovery for Lantronix serial-to-ethernet devices | Unofficial | ||
| 30777 | TCP | ZangZing agent | Unofficial | ||
| 31337 | TCP | Back Orifice—remote administration tool (often Trojan horse) | Unofficial | ||
| 31415 | ThoughtSignal—Server Communication Service (often Informational) | Unofficial | |||
| 31456 | TCP | TetriNET IRC gateway on some servers | Unofficial | ||
| 31457 | TCP | TetriNET | Official | ||
| 31458 | TCP | TetriNET Used for game spectators | Unofficial | ||
| 32123 | TCP | x3Lobby Used by x3Lobby, an internet application. | Unofficial | ||
| 32245 | TCP | MMTSG-mutualed over MMT (encrypted transmission) | Unofficial | ||
| 32769 | TCP | FileNet RPC | Unofficial | ||
| 32976 | TCP | LogMeIn Hamachi (VPN tunnel software; also port 12975)—used to connect to Mediation Server (bibi.hamachi.cc); will attempt to use SSL (TCP port 443) if both 12975 & 32976 fail to connect | Unofficial | ||
| 33434 | TCP | UDP | traceroute | Official | |
| 34443 | Linksys PSUS4 print server | Unofficial | |||
| 34567 | TCP | dhanalakshmi.org EDI service[91] | Official | ||
| 36963 | UDP | Any of the USGN online games, most notably Counter Strike 2D multiplayer (2D clone of popular CounterStrike computer game) | Unofficial | ||
| 37659 | TCP | Axence nVision | Unofficial | ||
| 37777 | TCP | Digital Video Recorder hardware | Unofficial | ||
| 40000 | TCP | UDP | SafetyNET p Real-time Industrial Ethernet protocol | Official | |
| 41823 | TCP | UDP | Murealm Client | Unofficial | |
| 43047 | TCP | TheòsMessenger second port for service TheòsMessenger | Official | ||
| 43048 | TCP | TheòsMessenger third port for service TheòsMessenger | Official | ||
| 43594–43595 | TCP | Jagex, RuneScape, FunOrb, etc. | Unofficial | ||
| 47001 | TCP | WinRM - Windows Remote Management Service [92] | Official | ||
| 47808 | TCP | UDP | BACnet Building Automation and Control Networks (4780810 = BAC016) | Official | |
| 49151 | TCP | UDP | Reserved | Official |
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