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21 Apr 12 Some Important Port Numbers

Listing of some widely used important Port Numbers

  • HTTP: TCP 80
  • HTTPS: TCP 443
  • FTP Data/Control: TCP 20/21
  • TELNET: TCP 23
  • SSH: TCP 22
  • DNS: UDP 53
  • TFTP: TCP 69
  • RDP: TCP 3389
  • NTP: UDP 123
  • POP3: TCP 110
  • SMTP: TCP 25
  • BootP: UDP 67,68
  • CAPWAP: UDP 5246, 5247

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