Port Number
Notable well-known port numbers
Number | Assignment |
---|---|
20 | File Transfer Protocol (FTP) Data Transfer |
21 | File Transfer Protocol (FTP) Command Control |
22 | Secure Shell (SSH) Secure Login |
23 | Telnet remote login service, unencrypted text messages |
25 | Simple Mail Transfer Protocol (SMTP) email delivery |
53 | Domain Name System (DNS) service |
67, 68 | Dynamic Host Configuration Protocol (DHCP) |
80 | Hypertext Transfer Protocol (HTTP) used in the World Wide Web |
110 | Post Office Protocol (POP3) |
119 | Network News Transfer Protocol (NNTP) |
123 | Network Time Protocol (NTP) |
143 | Internet Message Access Protocol (IMAP) Management of digital mail |
161 | Simple Network Management Protocol (SNMP) |
194 | Internet Relay Chat (IRC) |
443 | HTTP Secure (HTTPS) HTTP over TLS/SSL |