Port numbers used by TCP and UDP:
Please submit new ports that you encounter!
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Port/protocol Description
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1/tcp TCP Multiplexor
7/tcp Echo Protocol
7/udp Echo Protocol
9/tcp Discard Protocol
9/udp Discard Protocol
13/tcp Daytime Protocol
17/tcp Quote of the Day
19/tcp Chargen Protocol
19/udp Chargen Protocol
20/tcp FTP The file transfer protocol - data
21/tcp FTP The file transfer protocol - control
22/tcp SSH Secure logins, file transfers (scp, sftp) and port forwarding
23/tcp Telnet insecure text communications
25/tcp SMTP Simple Mail Transfer Protocol (E-mail)
53/tcp DNS Domain Name System
53/udp DNS Domain Name System
67/udp BOOTP BootStrap Protocol (Server) Also used by DHCP Dynamic Host Configuration Protocol
68/udp BOOTP BootStrap Protocol (Client) Also used by DHCP Dynamic Host Configuration Protocol
69/udp TFTP Trivial File Transfer Protocol
70/tcp Gopher
79/tcp finger Finger
80/tcp HTTP HyperText Transfer Protocol (WWW)
88/tcp Kerberos Authenticating agent
110/tcp POP3 Post Office Protocol (E-mail)
113/tcp ident old identification server system
119/tcp NNTP used for usenet newsgroups
139/tcp NetBIOS
143/tcp IMAP4 Internet Message Access Protocol (E-mail)
514/udp syslog used for system logging
443/tcp HTTPS used for securely transferring web pages
445/tcp Microsoft-DS (Active Directory, Windows shares, Sasser-worm, Agobot)
445/udp Microsoft-DS SMB file sharing
666/tcp id Software's Doom game played over TCP
591/tcp FileMaker 6.0 Web Sharing (HTTP Alternate, see port 80)
993/tcp IMAP4 over SSL, Internet Message Access Protocol (E-mail)
995/tcp POP3 over SSL, Post Office Protocol (E-mail)
1080/tcp SOCKS Proxy
1337/tcp Often used on compromised/infected computers
1352/tcp IBM Lotus Notes/Domino RCP
1433/tcp Microsoft-SQL-Server
1434/tcp Microsoft-SQL-Monitor
1434/udp Microsoft-SQL-Monitor
1494/tcp Citrix MetaFrame ICA Client
1521/tcp Oracle database default listener
1761/tcp Novell Zenworks Remote Control utility
1863/tcp MSN Messenger
2082/tcp CPanel's default port
2086/tcp Web Host Manager 's default port
3128/tcp HTTP used by web caches and the default port for the Squid cache
3306/tcp MySQL Database system
3389/tcp Microsoft Terminal Server (RDP)
4899/tcp RAdmin remote administration tool (often Trojan horse)
5000/tcp Universal plug-and-play Windows network device interoperability
5190/tcp AOL and AOL Instant Messenger
5222/tcp XMPP/Jabber Client Connection
5223/tcp XMPP/Jabber default port for SSL Client Connection
5269/tcp XMPP/Jabber Server Connection
5432/tcp PostgreSQL Database system
5517/tcp Setiqueue Proxy server client for SETI@Home project
5800/tcp VNC remote desktop protocol (for use over HTTP)
5900/tcp VNC remote desktop protocol (regular port)
6000/tcp X11 used for X-windows
6346/tcp Gnutella Filesharing (Bearshare, Limewire etc.)
6347/udp Gnutella
6348/udp Gnutella
6349/udp Gnutella
6350/udp Gnutella
6355/udp Gnutella
6667/tcp IRC, Internet Relay Chat
6881/tcp BitTorrent port often used
6969/tcp BitTorrent tracker port
8000/tcp iRDMI . Often mistakenly used instead of port 8080.
8080/tcp HTTP. See also Port 80. Tomcat also uses this as its default port.
8118/tcp privoxy http filtering proxy service
9898/tcp Dabber worm (trojan/virus)
31337/tcp Back Orifice Remote administration tool (often Trojan horse)
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