Common ports Detail list

Common ports Detail list

Below is a list of some common ports and the respective services

running on the ports.

20 FTP data (File Transfer Protocol)

21 FTP (File Transfer Protocol)

22 SSH

23 Telnet

25 SMTP (Simple Mail Transfer Protocol)

53 DNS (Domain Name Service)

68 DHCP (Dynamic host Configuration Protocol)

79 Finger

80 HTTP

110 POP3 (Post Office Protocol, version 3)

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

443 SSL (Secure Socket Layer)

445 SMB (NetBIOS over TCP)

Besides the above ports they are even some ports known as Trojan

ports used by Trojans that allow remote access to that system.