Tip: Use Ctrl+F to quickly find HTTP port numbers (click on titles to expand or collapse).| Port Number/Layer | Name | Description |
|---|---|---|
| 1 | tcpmux | TCP Port Service Multiplexer |
| 5 | rje | Remote Job Entry |
| 7 | echo | Echo Service |
| 9 | discard | Discard Service for Connection Testing |
| 11 | systat | System Status Listing Open Ports |
| 13 | daytime | Sends Date and Time to Requesting Host |
| 17 | qotd | Sends Quote of the Day to Connected Hosts |
| 18 | msp | Message Send Protocol |
| 19 | chargen | Character Generator Service; Sends Endless Stream of Characters |
| 20 | ftp-data | FTP Data Port |
| 21 | ftp | File Transfer Protocol (FTP) Port; Sometimes Used by File Service Protocol (FSP) |
| 22 | ssh | Secure Shell (SSH) Service |
| 23 | telnet | Telnet Service |
| 25 | smtp | Simple Mail Transfer Protocol (SMTP) |
| 37 | time | Time Protocol |
| 39 | rlp | Resource Location Protocol |
| 42 | nameserver | Internet Name Service |
| 43 | nicname | WHOIS Directory Service |
| 49 | tacacs | Terminal Access Controller Access-Control System for TCP/IP-Based Authentication and Access |
| 50 | re-mail-ck | Remote Mail Checking Protocol |
| 53 | domain | Domain Name Service (e.g., BIND) |
| 63 | whois++ | WHOIS++, an Extended WHOIS Service |
| 67 | bootps | Bootstrap Protocol (BOOTP) Service; Also Used by Dynamic Host Configuration Protocol (DHCP) Service |
| 68 | bootpc | Bootstrap Protocol (BOOTP) Client; Also Used by Dynamic Host Configuration Protocol (DHCP) Client |
| 69 | tftp | Trivial File Transfer Protocol (TFTP) |
| 70 | gopher | Gopher Internet Document Search and Retrieval |
| 71 | netrjs-1 | Remote Job Service |
| 72 | netrjs-2 | Remote Job Service |
| 73 | netrjs-3 | Remote Job Service |
| 73 | netrjs-4 | Remote Job Service |
| 79 | finger | Finger Service for User Contact Information |
| 80 | http | Hypertext Transfer Protocol (HTTP) for World Wide Web (WWW) Services |
| 88 | kerberos | Kerberos Network Authentication System |
| 95 | supdup | Telnet Protocol Extension |
| 101 | hostname | Hostname Service on SRI-NIC Machine |
| 102 | iso-tsap | ISO Development Environment (ISODE) Network Application |
| 105 | csnet-ns | Mailbox Name Server; Also Used by CSO Name Server |
| 107 | rtelnet | Remote Telnet |
| 109 | pop2 | Post Office Protocol Version 2 |
| 110 | pop3 | Post Office Protocol Version 3 |
| 111 | sunrpc | Remote Procedure Call (RPC) Protocol Used for Remote Command Execution, Utilized by Network File System (NFS) |
| 113 | auth | Authentication and Identity Protocol |
| 115 | sftp | Secure File Transfer Protocol (SFTP) Service |
| 117 | uucp-path | Unix-to-Unix Copy Protocol (UUCP) Path Service |
| 119 | nntp | Network News Transfer Protocol (NNTP) for USENET Discussion System |
| 123 | ntp | Network Time Protocol (NTP) |
| 137 | netbios-ns | NETBIOS Name Service Used by Samba in Red Hat Enterprise Linux |
| 138 | netbios-dgm | NETBIOS Datagram Service Used by Samba in Red Hat Enterprise Linux |
| 139 | netbios-ssn | NETBIOS Session Service Used by Samba in Red Hat Enterprise Linux |
| 143 | imap | Internet Message Access Protocol (IMAP) |
| 161 | snmp | Simple Network Management Protocol (SNMP) |
| 162 | snmptrap | SNMP Traps |
| 163 | cmip-man | Common Management Information Protocol (CMIP) |
| 164 | cmip-agent | Common Management Information Protocol (CMIP) |
| 174 | mailq | MAILQ |
| 177 | xdmcp | X Display Manager Control Protocol |
| 178 | nextstep | NeXTStep Window Server |
| 179 | bgp | Border Gateway Protocol |
| 191 | prospero | Prospero Service by Cliffod Neuman |
| 194 | irc | Internet Relay Chat (IRC) |
| 199 | smux | SNMP UNIX Multiplex |
| 201 | at-rtmp | AppleTalk Routing |
| 202 | at-nbp | AppleTalk Name Binding |
| 204 | at-echo | AppleTalk Echo Service |
| 206 | at-zis | AppleTalk Zone Information Protocol |
| 209 | qmtp | Quick Mail Transfer Protocol (QMTP) |
| 210 | z39.50 | NISO Z39.50 Database |
| 213 | ipx | Internetwork Packet Exchange Protocol (IPX), Commonly Used in Novell Netware Environments |
| 220 | imap3 | Internet Message Access Protocol Version 3 |
| 245 | link | LINK |
| 347 | fatserv | Fatmen Server |
| 363 | rsvp_tunnel | RSVP Tunnel |
| 369 | rpc2portmap | Coda File System Port Mapper |
| 370 | codaauth2 | Coda File System Authentication Service |
| 372 | ulistproc | UNIX Listserv |
| 389 | ldap | Lightweight Directory Access Protocol (LDAP) |
| 427 | svrloc | Service Location Protocol (SLP) |
| 434 | mobileip-agent | Mobile Internet Protocol (IP) Agent |
| 435 | mobilip-mn | Mobile Internet Protocol (IP) Manager |
| 443 | https | Hypertext Transfer Protocol Secure (HTTP) |
| 444 | snpp | Simple Network Paging Protocol |
| 445 | microsoft-ds | Server Message Block (SMB) over TCP/IP |
| 464 | kpasswd | Kerberos Password and Key Change Service |
| 468 | photuris | Photuris Session Key Management Protocol |
| 487 | saft | Simple Asymmetric File Transfer (SAFT) Protocol |
| 488 | gss-http | Generic Security Services (GSS) for HTTP |
| 496 | pim-rp-disc | Rendezvous Point Discovery (RP-DISC) for Protocol-Independent Multicast (PIM) Services |
| 500 | isakmp | Internet Security Association and Key Management Protocol (ISAKMP) |
| 535 | iiop | Internet Inter-ORB Protocol (IIOP) |
| 538 | gdomap | GNUstep Distributed Object Mapper (GDOMAP) |
| 546 | dhcpv6-client | Dynamic Host Configuration Protocol (DHCP) Version 6 Client |
| 547 | dhcpv6-server | Dynamic Host Configuration Protocol (DHCP) Version 6 Server |
| 554 | rtsp | Real-Time Streaming Protocol (RTSP) |
| 563 | nntps | Network News Transfer Protocol Secure (NNTPS) over Secure Socket Layer |
| 565 | whoami | whoami |
| 587 | submission | Mail Submission Agent (MSA) |
| 610 | npmp-local | Network Peripheral Management Protocol (NPMP) Local/Distributed Queue System (DQS) |
| 611 | npmp-gui | Network Peripheral Management Protocol (NPMP) GUI/Distributed Queue System (DQS) |
| 612 | hmmp-ind | HMMP Indication/DQS |
| 631 | ipp | Internet Printing Protocol (IPP) |
| 636 | ldaps | Lightweight Directory Access Protocol Secure (LDAPS) over Secure Socket Layer |
| 674 | acap | Application Configuration Access Protocol (ACAP) |
| 694 | ha-cluster | Heartbeat Service for High-Availability Clusters |
| 749 | kerberos-adm | Kerberos Version 5 (v5) 'kadmin' Database Management |
| 750 | kerberos-iv | Kerberos Version 4 (v4) Service |
| 765 | webster | Network Dictionary |
| 767 | phonebook | Network Phonebook |
| 873 | rsync | rsync File Transfer Service |
| 992 | telnets | Telnet Secure (TelnetS) over Secure Socket Layer |
| 993 | imaps | Internet Message Access Protocol Secure (IMAPS) over Secure Socket Layer |
| 994 | ircs | Internet Relay Chat Secure (IRCS) over Secure Socket Layer |
| 995 | pop3s | Post Office Protocol Version 3 Secure (POPS3) over Secure Socket Layer |
| Port Number/Layer | Name | Description |
|---|---|---|
| 512/tcp | exec | Used for Authentication of Remote Executed Processes |
| 512/udp | biff[comsat] | Asynchronous Mail Client (biff) and Service (comsat) |
| 513/tcp | login | Remote Login (rlogin) |
| 513/udp | who[whod] | List of Logged-In Users |
| 514/tcp | shell[cmd] | Remote Shell (rshell) and Remote Copy (rcp) Without Login |
| 514/udp | syslog | UNIX System Log Service |
| 515 | printer[spooler] | Printer (lpr) Spooler |
| 517/udp | talk | Remote Talk Service and Client |
| 518/udp | ntalk | Network Talk (ntalk), Remote Talk Service and Client |
| 519 | utime[unixtime] | UNIX Time Protocol (utime) |
| 520/tcp | efs | Extended File Name Server (EFS) |
| 520/udp | router[route,routed] | Routing Information Protocol (RIP) |
| 521 | ripng | Routing Information Protocol for Internet Protocol Version 6 (IPv6) |
| 525 | timed[timeserver] | Time Daemon (timed) |
| 526/tcp | tempo[newdate] | Tempo |
| 530/tcp | courier[rpc] | Courier Remote Procedure Call (RPC) Protocol |
| 531/tcp | conference[chat] | Internet Relay Chat |
| 532 | netnews | Netnews |
| 533/udp | netwall | Netwall for Urgent Broadcasts |
| 540/tcp | uucp[uucpd] | Unix-to-Unix Copy Service |
| 543/tcp | klogin | Kerberos Version 5 (v5) Remote Login |
| 544/tcp | kshell | Kerberos Version 5 (v5) Remote Shell |
| 548 | afpovertcp | Appletalk Filing Protocol (AFP) over Transmission Control Protocol (TCP) |
| 556 | remotefs[rfs_server,rfs] | Brunhoff Remote File System (RFS) |
| Port Number/Layer | Name | Description |
|---|---|---|
| 1080 | socks | SOCKS Network Application Proxy Service |
| 1236 | bvcontrol[rmtcfg] | Garcilis Packeten Remote Configuration Server |
| 1300 | h323hostcallsc | H.323 Host Call Secure |
| 1433 | ms-sql-s | Microsoft SQL Server |
| 1434 | ms-sql-m | Microsoft SQL Monitor |
| 1494 | ica | Citrix ICA Client |
| 1512 | wins | Microsoft Windows Internet Name Service |
| 1524 | ingreslock | Ingres Database Management System (DBMS) Locking Service |
| 1525 | prospero-np | Unprivileged Prospero |
| 1645 | datametrics[old-radius] | Datametrics/Former Radius Project |
| 1646 | sa-msg-port[oldradacct] | sa-msg-port/Former Radacct Project |
| 1649 | kermit | Kermit File Transfer and Management Service |
| 1701 | l2tp[l2f] | Layer 2 Tunneling Protocol (L2TP)/Layer 2 Forwarding (L2F) |
| 1718 | h323gatedisc | H.323 Gatekeeper Discovery |
| 1719 | h323gatestat | H.323 Gatekeeper Status |
| 1720 | h323hostcall | H.323 Host Call Setup |
| 1758 | tftp-mcast | Trivial File Transfer Protocol Multicast |
| 1759 | mtftp | Multicast Trivial File Transfer Protocol (MTFTP) |
| 1789 | hello | Hello Router Communication Port |
| 1812 | radius | Radius Dial-In Authentication and Accounting Service |
| 1813 | radius-acct | Radius Accounting |
| 1911 | mtp | Starlight Multimedia Transfer Protocol (MTP) |
| 1985 | hsrp | Cisco Hot Standby Router Protocol |
| 1986 | licensedaemon | Cisco License Management Daemon |
| 1997 | gdp-port | Cisco Gateway Discovery Protocol (GDP) |
| 2049 | nfs[nfsd] | Network File System (NFS) |
| 2102 | zephyr-srv | Zephyr Notification Transport and Server |
| 2103 | zephyr-clt | Zephyr Serv-HM Connection |
| 2104 | zephyr-hm | Zephyr Host Manager |
| 2401 | cvspserver | Concurrent Versions System (CVS) Client/Server Operation |
| 2430/tcp | venus | Venus Cache Manager for Coda File System (codacon port) |
| 2430/udp | venus | Venus Cache Manager for Coda File System (callback/wbc interface) |
| 2431/tcp | venus-se | Side Effects of Venus Transmission Control Protocol (TCP) |
| 2431/udp | venus-se | Side Effects of Venus User Datagram Protocol (UDP) |
| 2432/udp | codasrv | Coda File System Server Port |
| 2433/tcp | codasrv-se | Coda File System TCP Side Effects |
| 2433/udp | codasrv-se | Coda File System UDP SFTP Side Effects |
| 2600 | hpstgmgr[zebrasrv] | HPSTGMGR; Zebra Routing |
| 2601 | discp-client[zebra] | discp Client; Zebra Integrated Shell |
| 2602 | discp-server[ripd] | discp Server; Routing Information Protocol Daemon (ripd) |
| 2603 | servicemeter[ripngd] | Service Meter; RIP Daemon for IPv6 |
| 2604 | nsc-ccs[ospfd] | NSC CCS; Open Shortest Path First Daemon (ospfd) |
| 2605 | nsc-posa | NSC POSA; Border Gateway Protocol Daemon (bgpd) |
| 2606 | netmon[ospf6d] | Dell Netmon; OSPF Daemon for IPv6 (ospf6d) |
| 2809 | corbaloc | Common Object Request Broker Architecture (CORBA) Naming Service Locator |
| 3130 | icpv2 | Internet Cache Protocol Version 2 (v2); Used by Squid Proxy Cache Server |
| 3306 | mysql | MySQL Database Service |
| 3346 | trnsprntproxy | Trnsprnt Proxy |
| 4011 | pxe | Preboot Execution Environment (PXE) Service |
| 4321 | rwhois | Remote Whois (rwhois) Service |
| 4444 | krb524 | Kerberos Version 5 (v5) to Version 4 (v4) Ticket Converter |
| 5002 | rfe | Radio Free Ethernet (RFE) Audio Broadcast System |
| 5308 | cfengine | Configuration Engine (Cfengine) |
| 5999 | cvsup[CVSup] | CVSup File Transfer and Update Tool |
| 6000 | x11[X] | X Window System Service |
| 7000 | afs3-fileserver | Andrew File System (AFS) File Server |
| 7001 | afs3-callback | AFS Port for Callback to Cache Manager |
| 7002 | afs3-prserver | AFS User and Group Database |
| 7003 | afs3-vlserver | AFS File Volume Location Database |
| 7004 | afs3-kaserver | AFS Kerberos Authentication Service |
| 7005 | afs3-volser | AFS File Volume Management Server |
| 7006 | afs3-errors | AFS Error Interpretation Service |
| 7007 | afs3-bos | AFS Basic Overseer Process |
| 7008 | afs3-update | AFS Server-to-Server Updater |
| 7009 | afs3-rmtsys | AFS Remote Cache Manager Service |
| 9876 | sd | Session Director |
| 10080 | amanda | Advanced Maryland Automatic Network Disk Archiver (Amanda) Backup Service |
| 11371 | pgpkeyserver | Pretty Good Privacy (PGP)/GNU Privacy Guard (GPG) Public Key Server |
| 11720 | h323callsigalt | H.323 Call Signalling Alternate |
| 13720 | bprd | Veritas NetBackup Request Daemon (bprd) |
| 13721 | bpdbm | Veritas NetBackup Database Manager (bpdbm) |
| 13722 | bpjava-msvc | Veritas NetBackup Java/Microsoft Visual C++ (MSVC) Protocol |
| 13724 | vnetd | Veritas Network Utility |
| 13782 | bpcd | Vertias NetBackup |
| 13783 | vopied | Veritas VOPIED Protocol |
| 22273 | wnn6[wnn4] | Kanji/Kana Conversion System |
| 26000 | quake | Quake (and Related) Multiplayer Game Server |
| 26208 | wnn6-ds | |
| 33434 | traceroute | Traceroute Network Tracing Tool |
| Note: Comments in /etc/services: Port 1236 is registered as "bvcontrol" but is also used by the Gracilis Packeten Remote Configuration Server. The official name is listed as the primary name, and unregistered names are listed as aliases. Comments in /etc/services: Ports 2600 to 2606 are used unregistered by the zebra package. The registered name is the primary name, and the unregistered name used by zebra is listed as an alias. Comments in /etc/services file: The port is registered as wnn6 but also used the unregistered "wnn4" in the FreeWnn package. | ||
| Port Number/Layer | Name | Description |
|---|---|---|
| 1/ddp | rtmp | Routing Table Maintenance Protocol |
| 2/ddp | nbp | Name Binding Protocol |
| 4/ddp | echo | AppleTalk Echo Protocol |
| 6/ddp | zip | Zone Information Protocol |
| Port Number/Layer | Name | Description |
|---|---|---|
| 751 | kerberos_master | Kerberos Authentication |
| 752 | passwd_server | Kerberos Password (kpasswd) Server |
| 754 | krb5_prop | Kerberos v5 Slave Propagation |
| 760 | krbupdate[kreg] | Kerberos Registration |
| 1109 | kpop | Kerberos Post Office Protocol (KPOP) |
| 2053 | knetd | Kerberos Multiplexer |
| 2105 | eklogin | Kerberos v5 Encrypted Remote Login (rlogin) |
| Port Number/Layer | Name | Description |
|---|---|---|
| 15/tcp | netstat | Network Status (netstat) |
| 98/tcp | linuxconf | Linuxconf Linux Management Tool |
| 106 | poppassd | Post Office Protocol Password Change Daemon (POPPASSD) |
| 465/tcp | smtps | Simple Mail Transfer Protocol Secure (SMTPS) over Secure Socket Layer |
| 616/tcp | gii | Gateway Interface (Routing Daemon) |
| 808 | omirr[omirrd] | Online Mirror (Omirr) File Mirroring Service |
| 871/tcp | supfileserv | Software Upgrade Protocol (SUP) Server |
| 901/tcp | swat | Samba Web Administration Tool (SWAT) |
| 953 | rndc | Berkeley Internet Name Domain Version 9 (BIND 9) Remote Name Daemon Configuration Tool |
| 1127 | sufiledbg | Software Upgrade Protocol (SUP) Debug |
| 1178/tcp | skkserv | Simple Kana to Kanji (SKK) Japanese Input Server |
| 1313/tcp | xtel | French Minitel Text Information System |
| 1529/tcp | support[prmsd,gnatsd] | GNATS Bug Tracking System |
| 2003/tcp | cfinger | GNU Finger Service |
| 2150 | ninstall | Network Installation Service |
| 2988 | afbackup | afbackup Client-Server Backup System |
| 3128/tcp | squid | Squid Web Proxy Cache |
| 3455 | prsvp | RSVP Port |
| 5432 | postgres | PostgreSQL Database |
| 4557/tcp | fax | FAX Transmission Service (Old Service) |
| 4559/tcp | hylafax | HylaFAX Client-Server Protocol (New Service) |
| 5232 | sgi-dgl | SGI Distributed Graphics Library |
| 5354 | noclog | NOCOL Network Operations Center Log Daemon (noclogd) |
| 5355 | hostmon | NOCOL Network Operations Center Host Monitor |
| 5680/tcp | canna | Canna Japanese Character Input Interface |
| 6010/tcp | x11-ssh-offset | Secure Shell (SSH) X11 Forwarding Offset |
| 6667 | ircd | Internet Relay Chat Daemon (ircd) |
| 7100/tcp | xfs | X Font Server (XFS) |
| 7666/tcp | tircproxy | Tircproxy IRC Proxy Service |
| 8008 | http-alt | Alternative Hypertext Transfer Protocol (HTTP) |
| 8080 | webcache | World Wide Web (WWW) Cache Service |
| 8081 | tproxy | Transparent Proxy |
| 9100/tcp | jetdirect[laserjet,hplj] | Hewlett-Packard (HP) JetDirect Network Printing Service |
| 9359 | mandelspawn[mandelbrot] | Parallel Mandelbrot Generator for X Window System |
| 10081 | kamanda | Amanda Backup Service Using Kerberos |
| 10082/tcp | amandaidx | Amanda Backup Service |
| 10083/tcp | amidxtape | Amanda Backup Service |
| 20011 | isdnlog | Integrated Services Digital Network (ISDN) Logging System |
| 20012 | vboxd | ISDN Voice Box Daemon (vboxd) |
| 22305/tcp | wnn4_Kr | kWnn Korean Input System |
| 22289/tcp | wnn4_Cn | cWnn Chinese Input System |
| 22321/tcp | wnn4_Tw | tWnn Chinese Input System (Taiwan) |
| 24554 | binkp | Binkley TCP/IP Fidonet Mailing Program Daemon |
| 27374 | asp | Address Search Protocol |
| 60177 | tfido | Ifmail FidoNet-Compatible Mailing Service |
| 60179 | fido | FidoNet Email and News Network |