20/21
File Transfer Protocol
22
Secure File Transfer Protocol + Secure Shell
23
Telnet
25
Simple Mail Transfer Protocol
53
Domain Name System
67/68
Dynamic Host Configuration Protocol
69
Trivial File Transfer Protocol
80
Hypertext Transfer Protocol
123
Network Time Protocol
161/162
Simple Network Management Protocol
389
Lightweight Directory Access Protocol
443
Hypertext Transfer Protocol Secure
445
Server Message Block
514
Syslog
636
Lightweight Directory Access Protocol over SSL
587
Simple Mail Transfer Protocol Secure
1433
Structured Query Language Server
3389
Remote Desktop Protocol
5060/5061
Session Initiation Protocol