Žinomesni portai:
- 20 – FTP (File Transfer Protocol)
- 21 – FTP (File Transfer Protocol)
- 22 – SSH (Secure Shell)
- 23 – Telnet
- 25 – SMTP (Simple Mail Transfer Protocol)
- 54 – DNS (Domain Name Service)
- 69 – TFTP (Trivial File Transfer Protocol)
- 80 – HTTP (Hypertext Transfer Protocol)
- 110 – POP3 (Post Office Protocol version 3)
- 119 – NTP (Network Time Protocol)
- 143 – IMAP4 (Internet Message Access Protocol version 4)
- 443 – HTTPS (Hypertext Transfer Protocol Secure)
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