Common Ports I
20
File Transfer Protocol - Data (FTP-DATA)
21
File Transfer Protocol - Control (FTP)
22
Secure Shell (SSH)
23
Telnet (TELNET)
25
Simple Mail Transfer Protocol (SMTP)
Common Ports II
53
Domain Name System (DNS)
67
Client to server Dynamic Host Configuration Protocol v4 (DHCPv4)
68
Server to client Dynamic Host Configuration Protocol v4 (DHCPv4)
69
Trivial File Transfer Protocol (TFTP)
80
Hypertext Transfer Protocol (HTTP)
Common Ports III
110
Post Office Protocol 3 (POP3)
123
Network Time Protocol (NTP)
143
Internet Message Access Protocol (IMAP)
443
Secure HTTP (HTTPS)
546
Client to server Dynamic Host Configuration Protocol v6 (DHCPv6)
547
Server to client Dynamic Host Configuration Protocol v6 (DHCPv6)
3389
Remote Desktop Protocol (RDP)
