Here the list of commonly used TCP/IP port numbers are explained .

PORT —– ——–TYPE ————— APPLICATION

Port 21 —– International Standard —— FTP port
Port 22 —– International Standard —— SSH Server Listening port
Port 23 —– International Standard —— Telnet port
Port 25 —– International Standard —— SMTP mail port
Port 42 —– Microsoft ——————- WINS Replication port
Port 43 —– International Standard —— WHOIS port
Port 53 —– International Standard —— DNS port for DNS requests & replies
Port 67 —– International Standard —— DHCP port for DHCP requests &replies
Port 79 —– International Standard —— Finger command for SMTP
——————————————–Mailservers – ETRN Finger port
Port 80 —– International Standard —— HTTP port – Internet traffic
Port 102—– International Standard ——X.400 port
Port 110—– International Standard —— POP3 port
Port 115—– International Standard —— SFTP port
Port 119—– International Standard —— Newsgroups port
Port 123—– International Standard —— Network Time Protocol port
Port 135—– Microsoft——————– RPC Locator Service port
Port 137—– Microsoft———————NetBIOS Name service port / WINS
Port 143—–International Standard——–(IMAP4 port)
Port 161—–International Standard——–(SNMP port)
Port 179—–International Standard——–Border Gateway Protocol port
Port 379—–Microsoft——————— Site Replication Serivces (SRS port)
Port 389—–International Standard——–LDAP port
Port 443—–International Standard——–Secure HTTP traffic port (SSL port)
Port 445—–International Standard——–Microsoft Active Directory and SMB port
Port 465—–Google————————Google Mail Outgoing Mail Server
Port 636—–International Standard——–LDAP over SSL
Port 993—–International Standard——–Secure IMAP port
Port 995—–Google————————Google Mail Incoming POP3
Port 1026—-Novell————————Calendar Access Protocol port
Port 1080—-De-Facto Standard———–SOCKS / Online Chatting / Hotmail
Port 1090—-De-Facto Standard———–Real Audio port
Port 1433—-Microsoft———————SQL Server Port
Port 1434—-Microsoft———————SQL Server Monitoring Port
Port 1521—-Oracle————————Default Oracle port
Port 1677—-Novell————————Novell GroupWise
Port 1701—-International Standard——-L2TP port
Port 1720—-De-Facto Standard———–H.323 port
Port 1723—-International Standard——-PPTP port
Port 1900—-Microsoft——————–Media Center Extender – Xbox 360 port
Port 2409—-SPAMFighter————— SPAMFighter Content Classification Port
Port 3306—-MySQL AB——————Default MySQL Port
Port 3389—-Microsoft——————–Remote Desktop & Terminal Services Port
Port 3390—-Microsoft——————–Media Center Extender – Xbox 360 port
Port 3535—-GoDaddy——————–GoDaddy Secure SMTP Relay port
Port 4321—-De Facto Standard———–RWHOIS port
Port 4664—-Google———————–Google Desktop Search port
Port 5190—-America On Line————-AOL Instant Messenger port
Port 5500—-DualDesk——————–DualDesk port
Port 5631—-PCAnywhere—————–PCAnywhere 5631 TCP incoming port
Port 5632—-PCAnywhere—————–PCAnywhere 5632 UDP incoming port
Port 7070—-Real Networks—————Real Streaming Audio port
Port 7100—-Novell————————Novell GroupWise

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