常用的埠編號 port number

20/TCP,UDP FTP - data port Official
21/TCP,UDP FTP - control (command) port Official
22/TCP,UDP SSH (Secure Shell) - used for secure logins, file transfers (scp, sftp) and port forwarding Official
23/TCP,UDP Telnet protocol - unencrypted text communications Official
25/TCP,UDP SMTP - used for e-mail routing between mailservers E-mails Official
53/TCP,UDP DNS (Domain Name System) Official
67/UDP BOOTP (BootStrap Protocol) server; also used by DHCP (Dynamic Host Configuration Protocol) Official
80/TCP HTTP (HyperText Transfer Protocol) - used for transferring web pages Official
80/TCP HTTP - HTTP listening port Official
110/TCP POP3 (Post Office Protocol version 3) - used for sending/retrieving E-mails
137/TCP,UDP NetBIOS NetBIOS Name Service Official
138/TCP,UDP NetBIOS NetBIOS Datagram Service Official
139/TCP,UDP NetBIOS NetBIOS Session Service Official