AND CORRECT ANSWERS
Port 21 - File Transfer Protocol (FTP)
Port 22 - Secure Shell (SSH)
Port 3389 - Remote Desktop Protocol (RDP)
Ports 137, 138, 139 - NetBIOS
Port 53 - DNS: Domain Name System
Port 25 - SMTP (Simple Mail Transfer Protocol)
Port 110 - POP (Post Office Protocol)
Port 143 - IMAP (Internet Message Access Protocol)
Port 80 - HTTP (Hypertext Transfer Protocol)
Port 443 - HTTPS (Hyper Text Transfer Protocol Secure)