Commonly Used TCP/IP Protocols.

TCP/IP PROTOCOLS	PORT NUMBER
FTP – FILE TRANSFER PROTOCOL	20/21
SSH – SECURE SHELL	22
TELNET	23
SMTP (Outgoing Mail)	25
WINS REPLICATION	42(NETBIOS)/137
WHOIS	43
DNS/NAME DOMAIN	53
DHCP – DYNAMIC HOST CONTROL	67
HTTP	80
POP3	110
SFTP – SIMPLE FTP	115
NTP – NETWORK TIME PROTOCOL	123
RPC – REMOTE PROCEDURE CALL	135
IMAP4	143
SNMP – SIMPLE N/W MANAGEMENT PROTOCOL	161
BGP – BORDER GATEWAY PROTOCOL	179
LDAP – LIGHT WEIGHT DIRECTORY ACCESS PROTOCOL	389
SSL – SECURE SOCKET LAYER	443
GMAIL SMTP (SMTPS)	465
IMAPS (SECURE)	993
GMAIL POP4 (POP3S)	995
MSSQL	1433
MSSQL(MONITOR)	1434
RDP – REMOTE DESKTOP PROTOCOL	3389
L2TP (TUNNELING)	1701
PPTP (POINT TO POINT TUNNELING)	1723
MYSQL	3306