21 - FTP, 22 - SSH, 23 - TELNET, 25 - SMTP, 53 - DNS, 67/68 - DHCP, 80 - HTTP, 110 - POP3, 137-139 - NETBIOS/NETBT, 143 - IMAP, 161/162 - SNMP, 389 - LDAP, 427 - AFP/SLP, 443 - HTTPS, 445 - SMB/CIFS, 548 - AFP, 3389 - RDP,

Commonly found CompTIA Ports

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