Internet Services & Ports

Port 20: FTP data transfer Port 21: FTP control Port 22: Secure shell (SSH) Port 25: Simple mail transfer protocol (SMTP) Port 53: Domain name system (DNS) Port 80: Hypertext transfer protocol (HTTP) Port 110: Post office protocol v3 (POP3) Port 113: Authentication service/identification protocol Port 123: Network time protocol (NTP) Port 143: Internet message access protocol (IMAP) Port 443: Hypertext transfer protocol over SSL/TLS (HTTPS) Port 465: URL Rendesvous Directory for SSM (Cisco) Port 587: E-mail message submission (SMTP) Port 993: Internet message access protocol over SSL (IMAPS) Port 995: Post office protocol 3 over TLS/SSL (POP3S) Port 2030: CWP login page (non SSL) Port 2031: CWP login page (SSL)