| A | B |
|---|
| 20/21 | FTP File Transfer Protocol |
| 22 | SSH Secure Shell |
| 23 | Telnet Telecommunication Network |
| 25 | SMTP Simple Mail Transfer Protocol |
| 69 | TFTP Trivial File Transfer Protocol |
| 80 | HTTP Hyper Text Transfer Protocol |
| 88 | Kerberos |
| 123 | NTP Network Time Protocol |
| 143 | IMAP4 Internet Messaging Protocol ver 4 |
| 161 | SNMP Simple Network Managment Protocol |
| 389 | LDAP Lightweight Directory Access Protocol |
| 546/547 | DHCPv6 Dynamic Host Configuration Protocol |
| 1512 | WINS Windows Internet Name Service |
| 3389 | RDP Remote Desktop Protocol |
| 67/68 | DHCP Dynamic Host Configuration Protocol |
| 110 | POP3 Post Office Protocol version 3 |
| 53 | DNS Domain Name Service |
| 443 | SSL Secure Sockets Layer |
