Kode Port OSI

FTP klien = 20
FTP server = 21
Telnet = 23
Waktu = 37
DHCP = 67/68
TFTP = 69
HTTP server = 80
POP2 = 109
POP3 = 110
AUTH = 113
SFTP = 115
ORACLE = 1521
My SQL = 3306
PnP = 5000
IRC = 6667