| 20-21 | File Transfer Protocol (FTP) TCP |
| 22 | Secure Shell (SSH) TCP and UDP |
| 23 | Telnet (TCP) |
| 25 | Simple Mail Transfer Protocol (SMTP) TCP |
| 50-51 | IPSec (TCP and UDP) |
| 53 | Domain Name System (DNS) TCP and UDP |
| 67-68 | Dynamic Host Configuration Protocol (DHCP) UDP |
| 69 | Trivial File Transfer Protocol (TFTP) UDP |
| 80 | HyperText Transfer Protocol (HTTP) TCP |
| 110 | Post Office Protocol (POP3) TCP |
| 119 | Network News Transport Protocol (NNTP) TCP |
| 123 | Network Time Protocol (NTP) UDP |
| 135-139 | NetBIOS/NetBT (TCP and UDP) |
| 143 | Internet Message Access Protocol (IMAP4) TCP and UDP |
| 161-162 | Simple Network Management Protocol (SNMP) TCP and UDP |
| 389 | Lightweight Directory Access Protocol (LDAP) TCP and UDP |
| 443 | HTTP with Secure Sockets Layer (SSL) TCP and UDP |
| 989-990 | FTP over SSL/TLS (implicit mode) TCP |
| 3389 | Remote Desktop Protocol (RDP) TCP and UDP |
