The following table lists the most commonly used communication ports for services, daemons, and programs included in Red Hat Enterprise Linux. This list can also be found in the /etc/services file. To view the official list of "Registered Dynamic Ports" established by the Internet Assigned Numbers Authority (IANA), refer to the following URL: http://www.iana.org/assignments/port-numbers
"A layer" refers to whether a service or protocol uses TCP or UDP at the transport layer. If not listed, the service or protocol uses both.
在使用的过程中，发现有BUG，功能不完善，用户体验提升等意见，请点击右上方的 Leave a message to communicate 即可，谢谢你的支持。
Quick Index:
| Port number / Layer | Name | Annotation |
|---|---|---|
| 1 | tcpmux | TCP port service multiplexing |
| 5 | rje | Remote work access point |
| 7 | echo | Echo Service |
| 9 | discard | Empty service for connection testing |
| 11 | systat | System status for listing connected ports |
| 13 | daytime | Send date and time to the requested host. |
| 17 | qotd | Send daily sayings to the connected hosts. |
| 18 | msp | Message Sending Protocol |
| 19 | chargen | Character generation service; send an endless stream of characters |
| 20 | ftp-data | FTP data port |
| 21 | ftp | 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 for TCP/IP-based Verification and Access Control System |
| 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 | Boot Protocol (BOOTP) service; also used by Dynamic Host Configuration Protocol (DHCP) service |
| 68 | bootpc | Bootstrap (BOOTP) client; also used by Dynamic Host Configuration Protocol (DHCP) clients |
| 69 | tftp | Trivial File Transfer Protocol (TFTP) |
| 70 | gopher | Gopher Internet document search and retrieval |
| 71 | netrjs-1 | Remote work service |
| 72 | netrjs-2 | Remote work service |
| 73 | netrjs-3 | Remote work service |
| 73 | netrjs-4 | Remote work 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 Applications |
| 105 | csnet-ns | Email Name Server; also used by CSO Name Server |
| 107 | rtelnet | Remote Telnet |
| 109 | pop2 | Postal Protocol Version 2 |
| 110 | pop3 | Postal Protocol version 3 |
| 111 | sunrpc | Remote Procedure Call (RPC) protocols used for remote command execution are employed by the Network File System (NFS). |
| 113 | auth | Verification and Identity Authentication 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 systems |
| 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 | NET BIOS 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 trap |
| 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 | Boundary Network Protocol |
| 191 | prospero | Clifford Neuman's Prospero service |
| 194 | irc | Internet Relay Chat (IRC) |
| 199 | smux | SNMP UNIX Multiplexing |
| 201 | at-rtmp | AppleTalk routing |
| 202 | at-nbp | AppleTalk name binding |
| 204 | at-echo | AppleTalk echo service |
| 206 | at-zis | AppleTalk zone information |
| 209 | qmtp | Quick Mail Transfer Protocol (QMTP) |
| 210 | z39.50 | NISO Z39.50 database |
| 213 | ipx | Internetwork Packet Exchange (IPX), a datagram protocol commonly used in the Novell Netware environment. |
| 220 | imap3 | HTTP/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 Verification Service |
| 372 | ulistproc | UNIX Listserv |
| 389 | ldap | Lightweight Directory Access Protocol (LDAP) |
| 427 | svrloc | Service Location Protocol (SLP) |
| 434 | mobileip-agent | Mobile IP (IP) proxy |
| 435 | mobilip-mn | Mobile IP (IP) Manager |
| 443 | https | Secure Hypertext Transfer Protocol (HTTPS) |
| 444 | snpp | Mini-network paging protocol |
| 445 | microsoft-ds | Through TCP/IP Server Message Block (SMB) |
| 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 | General Security Services for HTTP (GSS) |
| 496 | pim-rp-disc | RP-DISC for multipoint transmission (PIM) independent of protocols |
| 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 | DHCP version 6 client |
| 547 | dhcpv6-server | Dynamic Host Configuration Protocol (DHCP) version 6 service |
| 554 | rtsp | Real-time Streaming Protocol (RTSP) |
| 563 | nntps | Network News Transfer Protocol over Secure Sockets Layer (NNTPS) |
| 565 | whoami | whoami |
| 587 | submission | Message Submission Agent (MSA) |
| 610 | npmp-local | Network Peripheral Management Protocol (NPMP) Local/Distributed Queueing System (DQS) |
| 611 | npmp-gui | Network Peripheral Management Protocol (NPMP) GUI / Distributed Queueing System (DQS) |
| 612 | hmmp-ind | HMMP instruction / DQS |
| 631 | ipp | Internet Printing Protocol (IPP) |
| 636 | ldaps | Lightweight Directory Access Protocol over Secure Sockets Layer (LDAPS) |
| 674 | acap | Application Configuration Access Protocol (ACAP) |
| 694 | ha-cluster | Heartbeat service for highly available clusters |
| 749 | kerberos-adm | Kerberos version 5 (v5) "kadmin" database management |
| 750 | kerberos-iv | Kerberos version 4 (v4) service |
| 765 | webster | Online dictionary |
| 767 | phonebook | Internet phone directory |
| 873 | rsync | rsync file transfer service |
| 992 | telnets | Telnet over Secure Sockets Layer (TelnetS) |
| 993 | imaps | Internet Message Access Protocol over Secure Sockets Layer (IMAPS) |
| 994 | ircs | Internet Relay Chat (IRCS) via Secure Sockets Layer |
| 995 | pop3s | Through the Post Office Protocol version 3 (POP3) over the Secure Sockets Layer (SSL) |
The following ports are UNIX-specific and involve services ranging from email to authentication. The names within brackets (e.g., [service]) are the names of the service daemons or their common aliases.
| Port number / Layer | Name | Annotation |
|---|---|---|
| 512/tcp | exec | Verify remote execution processes |
| 512/udp | biff [comsat] | Asynchronous email client (biff) and service (comsat) |
| 513/tcp | login | Remote Login (rlogin) |
| 513/udp | who [whod] | User login list |
| 514/tcp | shell [cmd] | Non-interactive remote shell (rshell) and remote copy (rcp) |
| 514/udp | syslog | UNIX system log service |
| 515 | printer [spooler] | Printer (LPR) pseudo-spooling |
| 517/udp | talk | Remote conversation services and customers |
| 518/udp | ntalk | Network Chat (NTalk), remote dialogue service and customer |
| 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] | timekeeper process |
| 526/tcp | tempo [newdate] | Tempo |
| 530/tcp | courier [rpc] | Courier RPC protocol |
| 531/tcp | conference [chat] | Internet relay chat |
| 532 | netnews | Netnews |
| 533/udp | netwall | Netwall for emergency broadcasting |
| 540/tcp | uucp [uucpd] | Unix to Unix replication service |
| 543/tcp | klogin | Kerberos version 5 (v5) remote login |
| 544/tcp | kshell | Kerberos Version 5 (v5) remote shell |
| 548 | afpovertcp | Appletalk File Access Protocol (AFP) over TCP |
| 556 | remotefs [rfs_server, rfs] | Brunhoff's Remote File System (RFS) |
Enumerated ports to be formally registered in the port number list, submitted by the Internet and software communities to IANA.
| Port number / Layer | Name | Annotation |
|---|---|---|
| 1080 | socks | SOCKS proxy network application service |
| 1236 | bvcontrol [rmtcfg] | Garcilis Packeten Remote Configuration Server |
| 1300 | h323hostcallsc | H.323 conference bridge telephone security |
| 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 Server |
| 1524 | ingreslock | Ingres 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 (LT2P) / Layer 2 Forwarding (L2F) |
| 1718 | h323gatedisc | H.323 Telecommunications Gateway Discovery Mechanism |
| 1719 | h323gatestat | H.323 Telecommunications Gateway Status |
| 1720 | h323hostcall | H.323 Telephony Host Phone Setup |
| 1758 | tftp-mcast | Small file FTP multicast |
| 1759 | mtftp | Multicast Tiny File Transfer Protocol (MTFTP) |
| 1789 | hello | Hello Router communication port |
| 1812 | radius | Radius Authentication and Accounting Service |
| 1813 | radius-acct | Radius Accounting |
| 1911 | mtp | Starlight Network 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 transmission and sending server |
| 2103 | zephyr-clt | Zephyr serv-hm connection |
| 2104 | zephyr-hm | Zephyr Host Manager |
| 2401 | cvspserver | Concurrent Version System (CVS) client/server operations |
| 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 TCP (Transmission Control Protocol) |
| 2431/udp | venus-se | Venus User Data Protocol (UDP) side effects |
| 2432/udp | codasrv | Coda filesystem 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 customer; Zebra integrated shell |
| 2602 | discp-server [ripd] | DiscP server; Routing Information Protocol daemon (ripd) |
| 2603 | servicemeter [ripngd] | Service metering; RIP daemon for IPv6 |
| 2604 | nsc-ccs [ospfd] | NSC CCS; Open Shortest Path First (OSPF)守护进程 |
| 2605 | nsc-posa | NSC POSA; Boundary Gateway Protocol Daemon (bgpd) |
| 2606 | netmon [ospf6d] | Dell Netmon; OSPFv6 daemon (ospf6d) |
| 2809 | corbaloc | Public 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 | Pre-boot Execution Environment (PXE) service |
| 4321 | rwhois | Remote Whois (rwhois) service |
| 4444 | krb524 | Kerberos v5 to v4 ticket converter |
| 5002 | rfe | RF-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 recharging the 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 Filesystem Volume Management Server |
| 7006 | afs3-errors | AFS Error Explanation Service |
| 7007 | afs3-bos | AFS Basic Inspection Process |
| 7008 | afs3-update | AFS Server-to-Server Updater |
| 7009 | afs3-rmtsys | AFS Remote Caching Manager service |
| 9876 | sd | Session navigator |
| 10080 | amanda | Advanced Maryland Automatic Network Disk Archiver (Amanda) Backup Service |
| 11371 | pgpkeyserver | Good Privacy (PGP) / GNU Privacy Guard (GPG) public key server |
| 11720 | h323callsigalt | H.323 call signaling alternation |
| 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 Tools |
| 13782 | bpcd | Vertias NetBackup |
| 13783 | vopied | Veritas VOPIED Protocol |
| 22273 | wnn6 [wnn4] | Kana/Kanji conversion system |
| 26000 | quake | Quake (and related) multiplayer game servers |
| 26208 | wnn6-ds | |
| 33434 | traceroute | Traceroute network tracing tool |
|
注:
/etc/services中的注释如下：端口1236被注册为“bvcontrol”，但是它也被 Gracilis Packeten 远程配置服务器使用。正式名称被列为主要名称，未注册的名称被列为别名。 在/etc/services中的注释：端口 2600 到 2606 被 zebra 软件包未经注册而使用。主要名称是被注册的名称，被 zebra 使用的未注册名称被列为别名。 /etc/services 文件中的注释：该端口被注册为 wnn6，但是还在 FreeWnn 软件包中使用了未注册的“wnn4”。 |
||
Displayed a list of ports related to Data Link Protocol (DDP). DDP is used on AppleTalk networks.
| Port number / Layer | Name | Annotation |
|---|---|---|
| 1/ddp | rtmp | Routing Table Management Protocol |
| 2/ddp | nbp | Name Binding Protocol |
| 4/ddp | echo | AppleTalk Echo Protocol |
| 6/ddp | zip | Block Information Protocol |
Port list related to Kerberos network authentication protocol. At the marked place, 'v5' denotes Kerberos version 5 protocol. Note, these ports are not registered in IANA.
| Port number / Layer | Name | Annotation |
|---|---|---|
| 751 | kerberos_master | Kerberos authentication |
| 752 | passwd_server | Kerberos password (kpasswd) server |
| 754 | krb5_prop | Kerberos v5 subordinate delegation |
| 760 | krbupdate [kreg] | Kerberos registration |
| 1109 | kpop | Kerberos Post Office Protocol (KPOP) |
| 2053 | knetd | Kerberos multiplexer |
| 2105 | eklogin | Kerberos v5 encrypted remote login (rlogin) |
A list of unregistered ports. These ports might be used by services or protocols installed on your Red Hat Enterprise Linux system, or they could be necessary for communication between Red Hat Enterprise Linux and machines running other operating systems.
| Port number / Layer | Name | Annotation |
|---|---|---|
| 15/tcp | netstat | Network status (netstat) |
| 98/tcp | linuxconf | Linuxconf Linux management tool |
| 106 | poppassd | POPPASSD (Post Office Protocol Password Change Daemon) |
| 465/tcp | smtps | Simple Mail Transfer Protocol over Secure Sockets Layer (SMTPS) |
| 616/tcp | gii | Interactive interface for using the gateway (route guard process) |
| 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 Server Configuration Tool |
| 1127 | sufiledbg | Software Upgrade Protocol (SUP) debugging |
| 1178/tcp | skkserv | Simple Kanji/Kana to Kanji (SKK) Japanese Input Server |
| 1313/tcp | xtel | French Minitel text information system |
| 1529/tcp | support [prmsd, gnatsd] | GNATS error 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 Operation Center records daemon (noclogd) |
| 5355 | hostmon | NOCOL Network Operations Center Host Monitoring |
| 5680/tcp | canna | Canna Japanese character input interface |
| 6010/tcp | x11-ssh-offset | 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 | An alternative to Hypertext Transfer Protocol (HTTP) |
| 8080 | webcache | World Wide Web (WWW) caching 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) login system |
| 20012 | vboxd | ISDN speaker guard process (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 mailer daemon |
| 27374 | asp | Address Search Protocol |
| 60177 | tfido | Ifmail FidoNet compatible mailing service |
| 60179 | fido | FidoNet Email and News Network |
You recently used: