ITTools

Port Checker

Check if a specific TCP port is open on a host.

Common:

TCP Port Checker

The Port Checker tool allows you to verify if a specific TCP port is open and accepting connections on a target hostname or IP address.

Common TCP Ports

  • 20 / 21: File Transfer Protocol (FTP)
  • 22: Secure Shell (SSH)
  • 25: Simple Mail Transfer Protocol (SMTP)
  • 53: Domain Name System (DNS)
  • 80: Hypertext Transfer Protocol (HTTP)
  • 110: Post Office Protocol v3 (POP3)
  • 143: Internet Message Access Protocol (IMAP)
  • 443: HTTP Secure (HTTPS)
  • 3306: MySQL Database
  • 3389: Remote Desktop Protocol (RDP)

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