Common HTTP, TCP, UDP Port Reference Table

No1. Most Common Ports

Port Number/Level Name Note
1 tcpmux TCP Port Service Multiplexing
5 rje Remote Job Entry
7 echo Echo Service
9 discard Null service for testing connections
11 systat System status for listing connected ports
13 daytime Sends the date and time to the requesting host
17 qotd Sends a daily quote to connected hosts
18 msp Message Send Protocol
19 chargen Character Generation Service; sends endless streams 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 authentication and access
50 re-mail-ck Remote Mail Check Protocol
53 domain Domain Name Service (like BIND)
63 whois++ WHOIS++, an extended WHOIS service
67 bootps Bootstrap Protocol (BOOTP) service; also used by DHCP service
68 bootpc Bootstrap (BOOTP) Client; also used by DHCP clients
69 tftp Trivial File Transfer Protocol (TFTP)
70 gopher Gopher Internet Document Searching 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) used 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 Transport Service Access Point
105 csnet-ns Mailbox name server; also used by CSO name servers
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 for remote command execution, used by Network File System (NFS)
113 auth Authentication and Identification 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 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 Clifford Neuman
194 irc Internet Relay Chat (IRC)
199 smux SNMP UNIX Multiplexer
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), common datagram protocol in Novell Netware environment
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 Secure HyperText Transfer Protocol (HTTPS)
444 snpp Simple Network Paging Protocol
445 microsoft-ds Server Message Block (SMB) over TCP/IP
464 kpasswd Kerberos Password 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 for Protocol Independent Multicast (PIM)
500 isakmp Internet Security Association and Key Management Protocol (ISAKMP)
535 iiop Internet Internetworking Object Request Broker (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 Service
554 rtsp Real-Time Streaming Protocol (RTSP)
563 nntps Network News Transfer Protocol Secure (NNTPS) over SSL
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 Indicator/DQS
631 ipp Internet Printing Protocol (IPP)
636 ldaps Lightweight Directory Access Protocol over SSL (LDAPS)
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 Administration
750 kerberos-iv Kerberos Version 4 (v4) Service
765 webster Internet Dictionary
767 phonebook Internet Phonebook
873 rsync rsync file transfer service
992 telnets Telnet over SSL (TelnetS)
993 imaps IMAP over SSL (IMAPS)
994 ircs IRC over SSL (IRCS)
995 pop3s POP3 over SSL (POPS3)

No2.UNIX Specific Ports (The following ports are unique to UNIX and cover a range of services from email to authentication. The names in brackets [service] are the names of the service's daemon or its common alias)

Port Number/Level Name Note
512/tcp exec Used for verifying remote execution 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 logging service
515 printer[spooler] Printer spool (lpr)
517/udp talk Remote conversation service and client
518/udp ntalk Network talk (ntalk), remote conversation 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 emergency 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 TCP
556 remotefs[rfs_server,rfs] Brunhoff's Remote File System (RFS)

No3. Registered Ports (Listing of ports formally registered to the IANA by the networking and software community)

Port Number/Level Name Note
1080 socks SOCKS network application proxy service
1236 bvcontrol[rmtcfg] Garcilis Packeten Remote Configuration Server
1300 h323hostcallsc H.323 Teleconference Host Phone 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 Service
1524 ingreslock Ingres Database Management System (DBMS) Locking Service
1525 prospero-np Unprivileged Prospero
1645 datametrics[old-radius] Datametrics / Old RADIUS project
1646 sa-msg-port[oldradacct] SA-MSG-PORT / Old RADACCT project
1649 kermit Kermit file transfer and management service
1701 l2tp[l2f] Layer 2 Tunneling Service (L2TP) / Layer 2 Forwarding (L2F)
1718 h323gatedisc H.323 Telecommunication Gateway Discovery Mechanism
1719 h323gatestat H.323 Telecommunication Gateway Status
1720 h323hostcall H.323 Telecommunication 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 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 transmit and send server
2103 zephyr-clt Zephyr server host manager connection
2104 zephyr-hm Zephyr Host Manager
2401 cvspserver Concurrent Versioning 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 Venus TCP Side-Effects
2431/udp venus-se Venus UDP Side-Effects
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 Pre-Execution Environment (PXE) Service
4321 rwhois Remote Whois (rwhois) Service
4444 krb524 Kerberos v5 (v5) to v4 (v4) ticket converter
5002 rfe Radio Frequency Ethernet (RFE) Audio Broadcasting 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 managers
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 Explanation Service
7007 afs3-bos AFS Basic Monitor 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 Signaling 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 Tools
13782 bpcd Vertias NetBackup
13783 vopied Veritas VOPIED Protocol
22273 wnn6[wnn4] Kana/Hanzi Conversion System
26000 quake Quake (and related) Multiplayer Game Server
26208 wnn6-ds  
33434 traceroute Traceroute Network Tracking Tool
Note:
The comments in /etc/services state that port 1236 is registered as "bvcontrol," but it is also used by the Garcilis Packeten remote configuration server. The formal name is listed as the primary name, and unregistered names are listed as aliases.
In the comments from /etc/services: Ports 2600 to 2606 are used by the zebra software package without registration. The primary name is the registered name, while the unregistered names used by zebra are listed as aliases.
The comments in the /etc/services file mention that the port is registered as wnn6, but the unregistered "wnn4" is also used in the FreeWnn software package.

No4. Datagram Delivery Protocol Ports (Displays a list of ports related to the Datagram Delivery Protocol (DDP) used in AppleTalk networks)

Port Number/Level Name Note
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

No5. Kerberos (Project Athena/MIT) Ports (A list of ports related to the Kerberos network authentication protocol, marked where v5 signifies Kerberos version 5 protocol; these ports are not registered with IANA)

Port Number/Level Name Note
751 kerberos_master Kerberos Authentication
752 passwd_server Kerberos Password (kpasswd) Server
754 krb5_prop Kerberos v5 Propagation
760 krbupdate[kreg] Kerberos Registration
1109 kpop Kerberos Post Office Protocol (KPOP)
2053 knetd Kerberos Demultiplexer
2105 eklogin Kerberos v5 Encrypted Remote Login (rlogin)

No6. Unregistered Ports (These ports may be used by services or protocols installed on your Red Hat Enterprise Linux system, or they are necessary ports for communication between Red Hat Enterprise Linux and machines running other operating systems)

Port Number/Level Name Note
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 SSL
616/tcp gii Gateway Interactive 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) Debugging
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 Logging 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 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 Service Digital Network (ISDN) Logon System
20012 vboxd ISDN Speaker 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 Mail Transfer Daemon
27374 asp Address Search Protocol
60177 tfido Ifmail FidoNet Compatible Mail Transfer Service
60179 fido FidoNet Email and News Network

Common HTTP, TCP, UDP Ports - Comprehensive List of Network Protocol Port Numbers

In network communications, port numbers are used to identify different services and applications. HTTP, TCP, and UDP protocols are the most common on the Internet, each with its specific port numbers. This article provides a detailed Common HTTP, TCP, UDP Port Reference Table to help developers and network engineers quickly find commonly used port numbers.

What is a Port Number?

Port numbers are numerical identifiers used in computer networks to identify network services. Each protocol (such as HTTP, TCP, UDP) has its range of port numbers and allocation rules. Common port numbers include HTTP's port 80 and HTTPS's port 443.

Common HTTP, TCP, UDP Port Numbers Reference Table

The following is a reference table for common HTTP, TCP, and UDP port numbers to help you quickly find the port information you need:

Protocol Port Number Description
HTTP 80 Used for web browsing, the default port for HTTP protocol
HTTPS 443 Used for encrypted web browsing, the secure version of HTTP
FTP 21 File Transfer Protocol, used for file transfer services
SSH 22 Secure Remote Login Protocol
Telnet 23 Remote Login Protocol (not secure)
SMTP 25 Simple Mail Transfer Protocol, used for sending emails
DNS 53 Domain Name System Protocol, used for domain name resolution
POP3 110 Post Office Protocol, used for receiving emails
IMAP 143 Internet Message Access Protocol, used for receiving emails
MySQL 3306 MySQL Database Service Port
RDP 3389 Remote Desktop Protocol, used for remote desktop connections
TCP 139 Used for NetBIOS session services
UDP 161 Simple Network Management Protocol (SNMP) port

How to Use Port Numbers?

Port numbers are used to identify various network services. For instance, when a browser accesses a website via the HTTP protocol, it defaults to using port 80. HTTPS uses port 443, while FTP uses port 21. Different services and protocols have different port number allocations.

Classification of Port Numbers

Port numbers can be categorized into the following types:

  • Well-known Ports: Range from 0 to 1023, typically used by common protocols such as HTTP (80), HTTPS (443), and FTP (21).
  • Registered Ports: Range from 1024 to 49151, available for application registration.
  • Dynamic or Private Ports: Range from 49152 to 65535, usually used for ports temporarily allocated to clients.

Conclusion

Understanding common port numbers for HTTP, TCP, and UDP is crucial for network management, system configuration, and development. By using the HTTP, TCP, UDP Port Reference Table, you can easily find the required port numbers and ensure your network services function properly.

Your footpath:
Choose Language