[edit] Well known ports: 1 - 1023
| Port | Application | Status |
|---|---|---|
| 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,UDP | Telnet protocol—unencrypted text communications | Official |
| 25/TCP,UDP | Simple Mail Transfer Protocol (SMTP)—used for e-mail routing between mail servers | Official |
| 26/TCP,UDP | RSFTP—a simple FTP-like protocol | Unofficial |
| 35/TCP,UDP | Any private printer server protocol | Official |
| 35/TCP,UDP | QMS Magicolor 2 printer server protocol | Unofficial |
| 37/TCP,UDP | TIME protocol | Official |
| 39/TCP,UDP | Resource Location Protocol[3] (RLP)—used for determining the location of higher level services from hosts on a network | Official |
| 41/TCP,UDP | Graphics | Official |
| 42/TCP,UDP | nameserver, ARPA Host Name Server Protocol | Official |
| 42/TCP,UDP | WINS | Unofficial |
| 43/TCP | WHOIS protocol | Official |
| 49/TCP,UDP | TACACS Login Host protocol | Official |
| 52/TCP,UDP | XNS (Xerox Network Services) Time Protocol | Official |
| 53/TCP,UDP | Domain Name System (DNS) | Official |
| 54/TCP,UDP | XNS (Xerox Network Services) Clearinghouse | Official |
| 56/TCP,UDP | XNS (Xerox Network Services) Authentication | Official |
| 56/TCP,UDP | RAP (Route Access Protocol)[4] | Unofficial |
| 57/TCP | MTP, Mail Transfer Protocol | Unofficial |
| 58/TCP,UDP | XNS (Xerox Network Services) 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 |
| 79/TCP | Finger protocol | Official |
| 80/TCP | Hypertext Transfer Protocol (HTTP) | Official |
| 81/TCP | Torpark—Onion routing | Unofficial |
| 82/UDP | Torpark—Control | Unofficial |
| 83/TCP | MIT ML Device | Official |
| 88/TCP | Kerberos—authentication system | Official |
| 90/TCP,UDP | dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map | Official |
| 90/TCP,UDP | Pointcast | Unofficial |
| 101/TCP | NIC host name | Official |
| 102/TCP | ISO-TSAP (Transport Service Access Point) Class 0 protocol[5] | Official |
| 104/TCP,UDP | ACR/NEMA Digital Imaging and Communications in Medicine | Official |
| 107/TCP | Remote TELNET Service[6] protocol | Official |
| 109/TCP | Post Office Protocol 2 (POP2) | Official |
| 110/TCP | Post Office Protocol 3 (POP3) | Official |
| 111/TCP,UDP | Sun Remote Procedure Call | Official |
| 113/TCP | ident—old user identification system, still used by IRC servers to identify users | Official |
| 113/TCP,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)—used for retrieving 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[7], used to remotely manage services including DHCP server, DNS server and WINS | 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,UDP | Internet Message Access Protocol (IMAP)—used for retrieving, organizing, and synchronizing e-mail messages | Official |
| 152/TCP,UDP | Background File Transfer Program (BFTP)[8] | 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/TCP,UDP | Simple Network Management Protocol (SNMP) | Official |
| 162/TCP,UDP | Simple Network Management Protocol Trap (SNMPTRAP)[9] | Official |
| 170/TCP | Print-srv, Network PostScript | Official |
| 179/TCP | BGP (Border Gateway Protocol) | Official |
| 194/TCP | IRC (Internet Relay Chat) | Official |
| 201/TCP,UDP | AppleTalk Routing Maintenance | Official |
| 209/TCP,UDP | The Quick Mail Transfer Protocol | Official |
| 213/TCP,UDP | IPX | Official |
| 218/TCP,UDP | MPP, Message Posting Protocol | Official |
| 220/TCP,UDP | IMAP, Interactive Mail Access Protocol, version 3 | Official |
| 259/TCP,UDP | ESRO, Efficient Short Remote Operations | Official |
| 264/TCP,UDP | BGMP, Border Gateway Multicast Protocol | Official |
| 311/TCP | Mac OS X Server Admin (officially AppleShare IP Web admistration) | Official |
| 308/TCP | Novastor Online Backup | Official |
| 318/TCP,UDP | PKIX TSP, Time Stamp Protocol | Official |
| 323/TCP,UDP | IMMP, Internet Message Mapping Protocol | Unofficial |
| 366/TCP,UDP | ODMR, On-Demand Mail Relay | Official |
| 369/TCP,UDP | Rpc2portmap | Official |
| 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 | Hypertext Transfer Protocol over TLS/SSL (HTTPS) | Official |
| 444/TCP,UDP | SNPP, Simple Network Paging Protocol (RFC 1568) | Official |
| 445/TCP | Microsoft-DS Active Directory, Windows shares | Official |
| 445/UDP | 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 | tcpnethaspsrv (Hasp services, TCP/IP version) | Official |
| 497/TCP | Dantz Retrospect | Official |
| 500/UDP | Internet Security Association and Key Management Protocol (ISAKMP) | Official |
| 502/TCP,UDP | Modbus, Protocol | Unofficial |
| 512/TCP | exec, Remote Process Execution | Official |
| 512/UDP | comsat, together with biff | Official |
| 513/TCP | Login | Official |
| 513/UDP | Who | Official |
| 514/TCP | Shell—used to execute non-interactive commands on a remote system | 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—RIP | Official |
| 524/TCP,UDP | NCP (NetWare Core Protocol) 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, IRC | 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 |
| 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[10] (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[11], a protocol for BEEP peers to form an application layer tunnel | Official |
| 623/UDP | ASF Remote Management and Control Protocol</ref> (ASF-RMCP) | Official |
| 631/TCP,UDP | Internet Printing Protocol (IPP) | Official |
| 636/TCP,UDP | Lightweight Directory Access Protocol over TLS/SSL (LDAPS) | Official |
| 639/TCP,UDP | MSDP, Multicast Source Discovery Protocol | Official |
| 646/TCP,UDP | LDP, Label Distribution Protocol, a routing protocol used in MPLS networks | Official |
| 647/TCP | DHCP Failover protocol[12] | Official |
| 648/TCP | RRP (Registry Registrar Protocol)[13] | Official |
| 652/TCP | DTCP, Dynamic Tunnel Configuration Protocol | Unofficial |
| 654/TCP | AODV (Ad-hoc On-demand Distance Vector) | Official |
| 655/TCP | IEEE MMS (IEEE Media Management System)[14][15] | Official |
| 657/TCP,UDP | IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM)[16] 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 |
| 692/TCP | Hyperwave-ISP | Official |
| 694/UDP | Linux-HA High availability Heartbeat | Unofficial |
| 695/TCP | IEEE-MMS-SSL (IEEE Media Management System over SSL)[17] | Official |
| 698/UDP | OLSR (Optimized Link State Routing) | Official |
| 699/TCP | Access Network | Official |
| 700/TCP | EPP (Extensible Provisioning Protocol), a protocol for communication between domain name registries and registrars (RFC 4934) | Official |
| 701/TCP | LMP (Link Management Protocol (Internet))[18], a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links | Official |
| 702/TCP | IRIS[19][20] (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol)[21] (RFC 3983) | Official |
| 706/TCP | SILC, Secure Internet Live Conferencing | Official |
| 711/TCP | Cisco TDP, Tag Distribution Protocol[22][23][24]—being replaced by the MPLS Label Distribution Protocol[25] | Official |
| 712/TCP | TBRPF, Topology Broadcast based on Reverse-Path Forwarding routing protocol (RFC 3684) | Official |
| 712/UDP | Promise RAID Controller | Unofficial |
| 720/TCP | SMQP, Simple Message Queue Protocol | Unofficial |
| 749/TCP,UDP | Kerberos administration | Official |
| 750/TCP | rfile | Official |
| 750/UDP | loadav | Official |
| 750/UDP | kerberos-iv, Kerberos version IV | Official |
| 751/TCP,UDP | pump | Official |
| 751/TCP,UDP | kerberos_master, Kerberos authentication | Unofficial |
| 752/TCP | qrh | Official |
| 752/UDP | qrh | Official |
| 752/UDP | userreg_server, Kerberos Password (kpasswd) server | Unofficial |
| 753/TCP | Reverse Routing Header (rrh)[26] | Official |
| 753/UDP | Reverse Routing Header (rrh) | Official |
| 753/UDP | passwd_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 | ns | Official |
| 760/TCP,UDP | krbupdate [kreg], Kerberos registration | Unofficial |
| 782/TCP | Conserver serial-console management server | Unofficial |
| 783/TCP | SpamAssassin spamd daemon | Unofficial |
| 829/TCP | CMP (Certificate Management Protocol) | Unofficial |
| 860/TCP | iSCSI (RFC 3720) | Official |
| 873/TCP | rsync file synchronisation protocol | Official |
| 888/TCP | cddbp, CD DataBase (CDDB) protocol (CDDBP)—unassigned but widespread use | Unofficial |
| 901/TCP | Samba Web Administration Tool (SWAT) | Unofficial |
| 902/TCP | VMware Server Console[27] | 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 |
| 981/TCP | SofaWare Technologies Remote HTTPS management for firewall devices running embedded Check Point FireWall-1 software | Unofficial |
| 989/TCP,UDP | FTP Protocol (data) over TLS/SSL | Official |
| 990/TCP,UDP | FTP Protocol (control) 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 |
| 1023/TCP,UDP | Reserved[1] | Official |
[edit] Registered ports: 1024–49151
Only those ports that are commonly used are listed; for full list, refer to the IANA port list.[1]
When investigating TCP traffic, be careful not to confuse the client and server ports. The client port is incremental, typically beginning at 1024 at boot time and wrapping at 4096. If the port you are investigating is in the lower part of this range, it may be a client port. Stateful firewalls identify the server port, but packet sniffers and stateless firewalls do not. For example, a packet sniffer showing a TCP packet with source port 1080 and destination port 1494 might be either the SOCKetS or Citrix Independent Computing Architecture (ICA) protocols. The only way to know for sure is to examine the initial TCP handshake.
With UDP, client port selection depends on the application and may be incremental, fixed to a nonsensical value, or fixed equal to the server port.
| Port | Description | Status |
|---|---|---|
| 1024/TCP,UDP | Reserved[1] | Official |
| 1025/TCP | NFS-or-IIS | Unofficial |
| 1026/TCP | Often utilized by Microsoft DCOM services | Unofficial |
| 1029/TCP | Often utilized 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/TCP,UDP | Reserved[1] | Official |
| 1109/TCP | Kerberos Post Office Protocol (KPOP) | Unofficial |
| 1140/TCP,UDP | AutoNOC Network Operations 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[28] | 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 |
| 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 |
| 1241/TCP,UDP | Nessus Security Scanner | Official |
| 1248/TCP | NSClient/NSClient++/NC_Net (Nagios) | Unofficial |
| 1270/TCP,UDP | Microsoft System Center Operations Manager (SCOM) (formerly Microsoft Operations Manager (MOM)) agent | Official |
| 1311/TCP | Dell Open Manage HTTPS | Unofficial |
| 1313/TCP | Xbiim (Canvii server) | Unofficial |
| 1337/TCP | WASTE Encrypted File Sharing Program | Unofficial |
| 1352/TCP | IBM Lotus Notes/Domino Remote Procedure Call (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,UDP | Microsoft SQL Server database management system Server | Official |
| 1434/TCP,UDP | Microsoft SQL Server database management system Monitor | Official |
| 1494/TCP | Citrix XenApp Independent Computing Architecture (ICA) thin client protocol | Official |
| 1512/TCP,UDP | Microsoft Windows Internet Name Service (WINS) | 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 |
| 1533/TCP | IBM Sametime IM—Virtual Places Chat | Official |
| 1547/TCP,UDP | Laplink | Official |
| 1550 | Gadu-Gadu (direct client-to-client) | Unofficial |
| 1581/UDP | MIL STD 2045-47001 VMF | Official |
| 1589/UDP | Cisco VQP (VLAN Query Protocol) / VMPS | Unofficial |
| 1645/TCP,UDP | radius, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers) | Unofficial |
| 1646/TCP,UDP | radacct, RADIUS accounting protocol (default for Cisco and Juniper Networks RADIUS servers) | Unofficial |
| 1627 | iSketch | Unofficial |
| 1677/TCP,UDP | Novell GroupWise clients in client/server access mode | Official |
| 1701/UDP | Layer 2 Forwarding Protocol (L2F) & Layer 2 Tunneling Protocol (L2TP) | Official |
| 1716/TCP | America's Army Massively multiplayer online role-playing game (MMORPG) | Unofficial |
| 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/TCP,UDP | cft-0 | Official |
| 1761/TCP | Novell Zenworks Remote Control utility | Unofficial |
| 1762–1768/TCP,UDP | cft-1 to cft-7 | 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 |
| 1900/UDP | Microsoft SSDP Enables discovery of UPnP devices | Official |
| 1935/TCP | Adobe Macromedia Flash Real Time Messaging Protocol (RTMP) "plain" protocol | Official |
| 1970/TCP,UDP | Danware NetOp Remote Control | Official |
| 1971/TCP,UDP | Danware NetOp School | Official |
| 1972/TCP,UDP | InterSystems Caché | Official |
| 1975–1977/UDP | Cisco TCO (Documentation) | Official |
| 1984/TCP | Big Brother—network monitoring tool | Official |
| 1985/UDP | Cisco HSRP | Official |
| 1994/TCP,UDP | Cisco STUN-SDLC (Serial Tunneling—Synchronous Data Link Control) protocol | Official |
| 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—obsolete (ex-http://www.mobrien.com) | Official |
| 2049/UDP | Network File System | Official |
| 2049/UDP | shilp | Official |
| 2053/UDP | lot105-ds-upd Lot105 DSuper Updates | Official |
| 2053/TCP | lot105-ds-upd Lot105 DSuper Updates | 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 |
| 2161/TCP | APC Agent | Official |
| 2181/TCP,UDP | EForward-document transport system | Official |
| 2190/UDP | TiVoConnect Beacon | Unofficial |
| 2200/UDP | Tuxanci game server[29] | Unofficial |
| 2219/TCP,UDP | NetIQ NCAP Protocol | Official |
| 2220/TCP,UDP | NetIQ End2End | Official |
| 2222/TCP | DirectAdmin default | Unofficial |
| 2222/UDP | Microsoft Office OS X antipiracy network monitor [1] | Unofficial |
| 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 |
| 2369/TCP | Default for BMC Software CONTROL-M/Server—Configuration Agent, though often changed during installation | Unofficial |
| 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 | Unofficial |
| 2381/TCP | HP Insight Manager default for Web server | Unofficial |
| 2404/TCP | IEC 60870-5-104, used to send electric power telecontrol messages between two systems via directly connected data circuits | 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 |
| 2546/TCP,UDP | Vytal Vault—Data Protection Services | Unofficial |
| 2593/TCP,UDP | RunUO—Ultima Online server | Unofficial |
| 2598/TCP | new ICA—when Session Reliability is enabled, TCP port 2598 replaces port 1494 | Unofficial |
| 2612/TCP,UDP | QPasa from MQSoftware | 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 |
| 2944/UDP | Megaco Text H.248 | Unofficial |
| 2945/UDP | Megaco Binary (ASN.1) H.248 | Unofficial |
| 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/UDP | Distributed Interactive Simulation (DIS), modifiable default | Unofficial |
| 3001/TCP | Miralix Phone Monitor | Unofficial |
| 3002/TCP | Miralix CSTA | Unofficial |
| 3003/TCP | Miralix GreenBox API | Unofficial |
| 3004/TCP | Miralix InfoLink | Unofficial |
| 3006/TCP | Miralix SMS Client Connector | Unofficial |
| 3007/TCP | Miralix OM Server | Unofficial |
| 3025/TCP | netpd.org | Unofficial |
| 3030/TCP,UDP | NetPanzer | Unofficial |
| 3050/TCP,UDP | gds_db (Interbase/Firebird) | Official |
| 3074/TCP,UDP | Xbox Live | Official |
| 3128/TCP | HTTP used by Web caches and the default for the Squid cache | Unofficial |
| 3260/TCP,UDP | 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 |
| 3300/TCP | TripleA game server | Unofficial |
| 3305/TCP,UDP | odette-ftp, Odette File Transfer Protocol (OFTP) | Official |
| 3306/TCP,UDP | MySQL database system | Official |
| 3333/TCP | Network Caller ID server | Unofficial |
| 3386/TCP,UDP | GTP' 3GPP GSM/UMTS CDR logging protocol | Official |
| 3389/TCP | Microsoft Terminal Server (RDP) officially registered as Windows Based Terminal (WBT) | Unofficial |
| 3396/TCP,UDP | Novell NDPS Printer Agent | Official |
| 3455/TCP,UDP | [RSVP] Reservation Protocol | 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 version control system | Official |
| 3702/TCP,UDP | Web Services Dynamic Discovery (WS-Discovery), used by various components of Windows Vista | Official |
| 3724/TCP,UDP | World of Warcraft Online gaming MMORPG | Official |
| 3724/TCP | Club Penguin Disney online game for kids | Unofficial |
| 3784/TCP,UDP | Ventrilo VoIP program used by Ventrilo | Unofficial |
| 3785/UDP | Ventrilo VoIP program used by Ventrilo | Unofficial |
| 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[30] | Official |
| 3945/TCP,UDP | EMCADS service, a Giritech product used by G/On | Official |
| 4000/TCP,UDP | Diablo II game | Unofficial |
| 4007/TCP | PrintBuzzer printer monitoring socket server | Unofficial |
| 4018/TCP,UDP | Unknown | Official |
| 4089/TCP,UDP | OpenCORE Remote Control Service | Official |
| 4093/TCP,UDP | PxPlus Client server interface ProvideX | Official |
| 4096/TCP,UDP | Bridge-Relay Element ASCOM | Official |
| 4100 | WatchGuard Authentication Applet—default | Unofficial |
| 4111/TCP | Xgrid | Official |
| 4125/TCP | Microsoft Remote Web Workplace administration | Unofficial |
| 4226/TCP,UDP | Aleph One (game) | Unofficial |
| 4224/TCP | Cisco CDP Cisco discovery Protocol | Unofficial |
| 4500/UDP | IPsec NAT traversal (RFC 3947) | Official |
| 4569/UDP | Inter-Asterisk eXchange | Unofficial |
| 4662/TCP,UDP | OrbitNet Message Service | Official |
| 4662/TCP | often used by eMule | Unofficial |
| 4664/TCP | Google Desktop Search | Unofficial |
| 4672/UDP | eMule—often used | Unofficial |
| 4747/TCP | Apprentice | Unofficial |
| 4750/TCP | BladeLogic Agent | Unofficial |
| 4847/TCP,UDP | Web Fresh Communication, Quadrion Software & Odorless Entertainment | Official |
| 4993/TCP,UDP | Home FTP Server web Interface Default Port | |
| 4894/TCP,UDP | LysKOM Protocol A | Official |
| 4899/TCP,UDP | Radmin remote administration tool (program sometimes used as a Trojan horse) | Official |
| 5000/TCP | commplex-main | Official |
| 5000/TCP | UPnP—Windows network device interoperability | Unofficial |
| 5000/TCP,UDP | VTun—VPN Software | Unofficial |
| 5001/TCP | commplex-link | Official |
| 5001/TCP,UDP | Iperf (Tool for measuring TCP and UDP bandwidth performance) | Unofficial |
| 5001/TCP | Slingbox and Slingplayer | Unofficial |
| 5003/TCP,UDP | FileMaker | Official |
| 5004/TCP,UDP,DCCP | RTP (Real-time Transport Protocol) media data (RFC 3551, RFC 4571) | Official |
| 5005/TCP,UDP,DCCP | RTP (Real-time Transport Protocol) control protocol (RFC 3551, RFC 4571) | Official |
| 5031/TCP,UDP | AVM CAPI-over-TCP (ISDN over Ethernet tunneling) | Unofficial |
| 5050/TCP | Yahoo! Messenger | Unofficial |
| 5051/TCP | ita-agent Symantec Intruder Alert[31] | Official |
| 5060/TCP,UDP | Session Initiation Protocol (SIP) | Official |
| 5061/TCP | Session Initiation Protocol (SIP) over TLS | Official |
| 5093/UDP | SPSS (Statistical Package for the Social Sciences) License Administrator | Unofficial |
| 5104/TCP | IBM Tivoli Framework NetCOOL/Impact[32] HTTP Service | Unofficial |
| 5106/TCP | A-Talk Common connection | Unofficial |
| 5107/TCP | A-Talk Remote server connection | Unofficial |
| 5110/TCP | ProRat Server | Unofficial |
| 5121/TCP | Neverwinter Nights | Unofficial |
| 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, Jabber) client connection (RFC 3920) | Official |
| 5223/TCP | Extensible Messaging and Presence Protocol (XMPP, Jabber) client connection over SSL | Unofficial |
| 5269/TCP | Extensible Messaging and Presence Protocol (XMPP, Jabber) server connection (RFC 3920) | Official |
| 5298/TCP,UDP | Extensible Messaging and Presence Protocol (XMPP) link-local messaging | 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 |
| 5402/TCP,UDP | mftp, Stratacache OmniCast content delivery system MFTP file sharing protocol | Official |
| 5405/TCP,UDP | NetSupport | Official |
| 5421/TCP,UDP | Net Support 2 | Official |
| 5432/TCP,UDP | PostgreSQL database system | Official |
| 5445/UDP | Cisco Unified Video Advantage | 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 |
| 5555/TCP | Freeciv versions up to 2.0, Hewlett Packard Data Protector, SAP | Unofficial |
| 5556/TCP,UDP | Freeciv | Official |
| 5631/TCP | pcANYWHEREdata, Symantec pcAnywhere (version 7.52 and later[33])[34] data | Official |
| 5632/UDP | pcANYWHEREstat, Symantec pcAnywhere (version 7.52 and later) status | Official |
| 5666/TCP | NRPE (Nagios) | Unofficial |
| 5667/TCP | NSCA (Nagios) | Unofficial |
| 5800/TCP | VNC remote desktop protocol—for use over HTTP | Unofficial |
| 5814/TCP,UDP | Hewlett-Packard Support Automation (HP OpenView Self-Healing Services) | Official |
| 5900/TCP,UDP | Virtual Network Computing (VNC) remote desktop protocol (used by Apple Remote Desktop and others) | Official |
| 5938/TCP,UDP | TeamViewer[35] remote desktop protocol | Unofficial |
| 5984/TCP,UDP | CouchDB database server | 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 | Unofficial |
| 6050/TCP | Brightstor Arcserve Backup | Unofficial |
| 6051/TCP | Brightstor Arcserve Backup | Unofficial |
| 6086/TCP | PDTP—FTP like file server in a P2P network | Official |
| 6100/TCP | Vizrt System | Unofficial |
| 6110/TCP,UDP | softcm, HP Softbench CM | Official |
| 6111/TCP,UDP | spc, HP Softbench Sub-Process Control | Official |
| 6112/TCP,UDP | "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 | 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 | Unofficial |
| 6257/UDP | WinMX (see also 6699) | Unofficial |
| 6346/TCP,UDP | gnutella-svc, Gnutella (FrostWire, Limewire, Shareaza, etc.) | Official |
| 6347/TCP,UDP | gnutella-rtr, Gnutella alternate | Official |
| 6444/TCP,UDP | Sun Grid Engine—Qmaster Service | Official |
| 6445/TCP,UDP | Sun Grid Engine—Execution Service | Official |
| 6502/TCP,UDP | Danware Data NetOp Remote Control | Unofficial |
| 6522/TCP | Gobby (and other libobby-based software) | Unofficial |
| 6543/UDP | Paradigm Research & Development Jetnet[36] default | Unofficial |
| 6566/TCP | SANE (Scanner Access Now Easy)—SANE network scanner daemon | Unofficial |
| 6600/TCP | Music Playing Daemon (MPD) | Unofficial |
| 6619/TCP,UDP | odette-ftps, Odette File Transfer Protocol (OFTP) over TLS/SSL | Official |
| 6665–6669/TCP | Internet Relay Chat | 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 |
| 6771/UDP | Polycom server broadcast | 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 Azureus'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,UDP | Default for BMC Software CONTROL-M/Server and CONTROL-M/Agent—Agent-to-Server, though often changed during installation | Unofficial |
| 7006/TCP,UDP | Default for BMC Software CONTROL-M/Server and CONTROL-M/Agent—Server-to-Agent, though often changed during installation | Unofficial |
| 7010/TCP | Default for Cisco AON AMC (AON Management Console) [2] | Unofficial |
| 7025/TCP | Zimbra LMTP [mailbox]—local mail delivery | Unofficial |
| 7047/TCP | Zimbra conversion server | Unofficial |
| 7133/TCP | Enemy Territory: Quake Wars | Unofficial |
| 7171/TCP | Tibia | Unofficial |
| 7306/TCP | Zimbra mysql [mailbox] | Unofficial |
| 7307/TCP | Zimbra mysql [logger] | Unofficial |
| 7312/UDP | Sibelius License Server | Unofficial |
| 7670/TCP | BrettspielWelt BSW Boardgame Portal | Unofficial |
| 7777/TCP | iChat server file transfer proxy | Unofficial |
| 7777/TCP | Default used by Windows backdoor program tini.exe | Unofficial |
| 7831/TCP | Default used by Smartlaunch Internet Cafe Administration[37] software | Unofficial |
| 7915/TCP | Default for YSFlight server [3] | Unofficial |
| 8000/TCP,UDP | iRDMI (Intel Remote Desktop Management Interface)[38]—sometimes erroneously used instead of port 8080 | Official |
| 8000/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 |
| 8010/TCP | XMPP/Jabber File transfers | Unofficial |
| 8074/TCP | Gadu-Gadu | 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 |
| 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/UDP | Kaspersky AV Control Center | Unofficial |
| 8087/TCP | SW Soft Plesk Control Panel | Unofficial |
| 8090/TCP | Another HTTP Alternate (http_alt_alt)—used as an alternative to port 8080 | 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 |
| 8220/TCP | Bloomberg | Unofficial |
| 8222 | VMware Server Management User Interface (insecure Web interface)[39]. See also port 8333 | Unofficial |
| 8243/TCP,UDP | HTTPS listener for Apache Synapse [40] | Official |
| 8280/TCP,UDP | HTTP listener for Apache Synapse [40] | Official |
| 8291/TCP | Winbox—Default on a MikroTik RouterOS for a Windows application used to administer MikroTik RouterOS | Unofficial |
| 8294/TCP | Bloomberg | Unofficial |
| 8333 | VMware Server Management User Interface (secure Web interface)[41]. See also port 8222 | Unofficial |
| 8400/TCP,UDP | cvp, Commvault Unified Data Management | Official |
| 8443/TCP | SW Soft Plesk Control Panel | Unofficial |
| 8484/TCP,UDP | MapleStory | Unofficial |
| 8500/TCP | ColdFusion Macromedia/Adobe ColdFusion default | Unofficial |
| 8501/UDP | Duke Nukem 3D—default | Unofficial |
| 8767/UDP | TeamSpeak—default | 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 |
| 8881/TCP | Atlasz Informatics Research Ltd Secure Application Server | Unofficial |
| 8882/TCP | Atlasz Informatics Research Ltd Secure Application Server | Unofficial |
| 8888/TCP,UDP | 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 |
| 9000/TCP | Buffalo LinkSystem Web access | Unofficial |
| 9000/TCP | DBGp | Unofficial |
| 9000/UDP | UDPCast | 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 |
| 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 | Openfire Administration Console | Unofficial |
| 9100/TCP | PDL Data Stream | Official |
| 9110/UDP | SSMP Message protocol | Unofficial |
| 9101 | Bacula Director | Official |
| 9102 | Bacula File Daemon | Official |
| 9103 | Bacula Storage Daemon | Official |
| 9119/TCP,UDP | MXit Instant Messenger | Official |
| 9418/TCP,UDP | git, Git pack transfer service | Official |
| 9443/TCP | WSO2 Web Services Application Server HTTPS transport (officially WSO2 Tungsten HTTPS | Official |
| 9443/TCP | WebSphere Application Server HTTP Transport (port 2) default | Unofficial |
| 9535/TCP | mngsuite, LANDesk Management Suite Remote Control | Official |
| 9535/TCP | BBOS001, IBM Websphere Application Server (WAS) High Avail Mgr Com | Unofficial |
| 9535/UDP | mngsuite, LANDesk Management Suite Remote Control | Official |
| 9800/TCP,UDP | WebDAV Source | Official |
| 9800 | WebCT e-learning portal | Unofficial |
| 9875/TCP | Club Penguin Disney online game for kids | Unofficial |
| 9898/TCP,UDP | MonkeyCom | Official |
| 9898/TCP | Tripwire - File Integrity Monitoring Software | Unofficial |
| 9999 | Hydranode—edonkey2000 TELNET control | Unofficial |
| 9999/TCP | Lantronix UDS-10/UDS100[42] RS-485 to Ethernet Converter TELNET control | Unofficial |
| 9999 | Urchin Web Analytics | Unofficial |
| 10000 | Webmin—Web-based Linux admin tool | Unofficial |
| 10000 | BackupExec | Unofficial |
| 10001/TCP | Lantronix UDS-10/UDS100[43] 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 |
| 10017 | AIX,NeXT, HPUX—rexd daemon control | Unofficial |
| 10024/TCP | Zimbra smtp [mta]—to amavis from postfix | Unofficial |
| 10025/TCP | Ximbra smtp [mta]—back to postfix from amavis | Unofficial |
| 10050/TCP,UDP | Zabbix-Agent | Official |
| 10051/TCP,UDP | Zabbix-Trapper | Official |
| 10113/TCP,UDP | NetIQ Endpoint | Official |
| 10114/TCP,UDP | NetIQ Qcheck | Official |
| 10115/TCP,UDP | NetIQEndpoint | Official |
| 10116/TCP,UDP | NetIQ VoIP Assessor | Official |
| 10200/TCP | FRISK Software International's fpscand virus scanning daemon for Unix platforms [4] | Unofficial |
| 10200–10204/TCP | FRISK Software International's f-protd virus scanning daemon for Unix platforms [5] | Unofficial |
| 10308 | Lock-on: Modarn Air Combat | Unofficial |
| 10480 | SWAT 4 Dedicated Server | 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 |
| 12035/UDP | Linden Lab viewer to sim | Unofficial |
| 12345 | NetBus—remote administration tool (often Trojan horse). Also used by NetBuster. Little Fighter 2 (TCP). | 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 SL | Unofficial |
| 13000–13050/UDP | Linden Lab viewer to sim | 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 |
| 14567/UDP | Battlefield 1942 and mods | Unofficial |
| 15000/TCP | psyBNC | Unofficial |
| 15000/TCP | Wesnoth | 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[44] | Unofficial |
| 16384/UDP | Iron Mountain Digital online backup | Unofficial |
| 16567/UDP | Battlefield 2 and mods | Unofficial |
| 18180/TCP | DART Reporting server | Unofficial |
| 19226/TCP | Panda Software AdminSecure Communication Agent | Unofficial |
| 19638/TCP | Ensim Control Panel | Unofficial |
| 19813/TCP | 4D database Client Server Communication | Unofficial |
| 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 |
| 20720/TCP | Symantec i3 Web GUI server | Unofficial |
| 22347/TCP,UDP | WibuKey, WIBU-SYSTEMS AG Software protection system | Official |
| 22350/TCP,UDP | CodeMeter, WIBU-SYSTEMS AG Software protection system | Official |
| 24444 | NetBeans integrated development environment | Unofficial |
| 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 |
| 25999/TCP | Xfire | Unofficial |
| 26000/TCP,UDP | 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 |
| 27010 | Half-Life and its mods, such as Counter-Strike | Unofficial |
| 27015 | Half-Life and its mods, such as Counter-Strike | Unofficial |
| 27374 | Sub7 default. Most script kiddies do not change from this. | Unofficial |
| 27500/UDP | (through 27900) id Software's QuakeWorld | Unofficial |
| 27888/UDP | Kaillera server | Unofficial |
| 27900 | (through 27901) Nintendo Wi-Fi Connection | Unofficial |
| 27901/UDP | (through 27910) id Software's Quake II master server | Unofficial |
| 27960/UDP | (through 27969) Activision's Enemy Territory and id Software's Quake III Arena and Quake III and some ioquake3 derived games | Unofficial |
| 28910 | Nintendo Wi-Fi Connection | Unofficial |
| 28960 | Call of Duty 2 Common Call of Duty 2 (PC Version) | Unofficial |
| 28961 | Call of Duty 4: Modern Warfare Common Call of Duty 4 (PC Version) | Unofficial |
| 29900 | (through 29901) Nintendo Wi-Fi Connection | Unofficial |
| 29920 | Nintendo Wi-Fi Connection | Unofficial |
| 30000 | Pokemon Netbattle | Unofficial |
| 30564/TCP | Multiplicity: keyboard/mouse/clipboard sharing software | Unofficial |
| 31337/TCP | Back Orifice—remote administration tool (often Trojan horse) | Unofficial |
| 31337/TCP | xc0r3 security | 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 |
| 32245/TCP | MMTSG-mutualed over MMT (encrypted transmission) | 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 |
| 37777/TCP | Digital Video Recorder hardware | Unofficial |
| 36963 | Counter Strike 2D multiplayer (2D clone of popular CounterStrike computer game) | Unofficial |
| 40000/TCP,UDP | SafetyNET p Real-time Industrial Ethernet protocol | Official |
| 41377/TCP,UDP | ActiveSync p Real-time Industrial Ethernet protocol | Official |
| 41378/TCP,UDP | ActiveSync p Real-time Industrial Ethernet protocol | Official |
| 43594–43595/TCP | RuneScape | Unofficial |
| 47808/TCP,UDP | BACnet Building Automation and Control Networks | Official |
| 49151/TCP,UDP | Reserved[1] | Official |
| 52812/TCP,UDP | Bassline WinPOP p Real-time Industrial Ethernet protocol | Official |
| 58000/TCP,UDP | Pearl Echo p Real-time Industrial Ethernet protocol | Official |
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