Most Important TCP Ports

Port Assignments:

Keyword         Decimal    Description
-------         -------    -----------
echo              7        Echo
daytime          13        Daytime (RFC 867)
msp              18        Message Send Protocol
ftp-data         20        File Transfer [Default Data]
ftp              21        File Transfer [Control]
ssh              22        SSH Remote Login Protocol
telnet           23        Telnet
smtp             25        Simple Mail Transfer
msg-auth         31        MSG Authentication
time             37        Time
name             42        Host Name Server
nameserver       42        Host Name Server
nicname          43        Who Is
domain           53        Domain Name Server
whois++          63        whois++
gopher           70        Gopher
finger           79        Finger
http             80        World Wide Web HTTP
www              80        World Wide Web HTTP
www-http         80        World Wide Web HTTP
pop3            110        Post Office Protocol - Version 3
ident           113
auth            113        Authentication Service
sqlserv         118        SQL Services
nntp            119        Network News Transfer Protocol
netbios-ns      137        NETBIOS Name Service
netbios-dgm     138        NETBIOS Datagram Service
netbios-ssn     139        NETBIOS Session Service
at-rtmp         201        AppleTalk Routing Maintenance
at-nbp          202        AppleTalk Name Binding
at-echo         204        AppleTalk Echo
at-zis          206        AppleTalk Zone Information
ipx             213        IPX
imap3           220        Interactive Mail Access Protocol v3
set             257        Secure Electronic Transaction