List of common Ports in Linux

Just giving the list of common ports.

21       FTP

22       SSH

23       Telnet

25       SMTP

53       DNS (Domain Name Service)

68       DHCP

80       HTTP (HyperText Transfer Protocol)

110     POP3 (Post Office Protocol, version 3)

115     SFTP (Secure File Transfer Protocol)

119     NNTP (Network New Transfer Protocol)

123     NTP (Network Time Protocol)

137     NetBIOS-ns

138     NetBIOS-dgm

139     NetBIOS

143     IMAP (Internet Message Access Protocol)

161     SNMP (Simple Network Management Protocol)

194     IRC (Internet Relay Chat)

220     IMAP3 (Internet Message Access Protocol 3)

389     LDAP (Lightweight Directory Access Protocol)

443     SSL (Secure Socket Layer)

445     SMB (NetBIOS over TCP)

993     SIMAP (Secure Internet Message Access Protocol)

995     SPOP (Secure Post Office Protocol)

4000   ICQ

5010   Yahoo! Messenger

5190   AOL Instant Messenger

5632   PC Anywhere

5800 + 5900   VNC (Remote Admin Software)

8080   HTTP Proxy