TCP Port Scan

Probe common TCP ports on your public IP from our server. Only the address making this request is scanned.

Results reflect what is reachable on your public IP (often a router or firewall), not necessarily your PC. Scanning may take 15–40 seconds. Requires the C# backend API.

Ports included

  • FTP — 21
  • SSH — 22
  • Telnet — 23
  • Mail [SMTP] — 25
  • DNS — 53
  • Web Server [HTTP] — 80
  • Mail [POP] — 110
  • NetBIOS — 137
  • NetBIOS — 138
  • NetBIOS — 139
  • Mail [IMAP] — 143
  • Web Server [HTTPS] — 443
  • Microsoft-DS Service — 445
  • Apple Filesharing Protocol — 548
  • Mail [SMTP Submission] — 587
  • Mail [IMAP SSL] — 993
  • Mail [POP SSL] — 995
  • Database [MSSQL] — 1433
  • VPN [L2TP] — 1701
  • VPN [PPTP] — 1723
  • Database [MySQL] — 3306
  • Database [PgSQL] — 5432
  • Calendar Server [CalDAV] — 8008
  • Calendar Server [CalDAV SSL] — 8443

Status meanings

  • Open — TCP connection succeeded (service may be listening).
  • Closed — Host refused the connection (RST).
  • Filtered — No response before timeout (firewall or drop).