Port http, https, ftp, dns, ssh, dan lain-lain.

• 2101: File Transfer Protocol (FTP)
• 22: Secure Shell (SSH)
• 2300: Telnet remote login service
• 25: Simple Mail Transfer Protocol (SMTP)
• 53: Domain Name System (DNS) service
• 8080: Hypertext Transfer Protocol (HTTP) used in the World Wide Web
• 110: Post Office Protocol (POP3)
• 119: Network News Transfer Protocol (NNTP)
• 1431: Internet Message Access Protocol (IMAP)
• 161: Simple Network Management Protocol (SNMP)
• 1943: Internet Relay Chat (IRC)
• 443: HTTP Secure (HTTPS)
• 4657: SMTP Secure (SMTPS)