Port Scanner

A port scanner probes a server or host for open TCP ports. Each port corresponds to a specific service - for example, port 80 is used for HTTP web traffic, and port 22 is used for SSH.

Port Status Meanings

• Open: A service is actively listening and accepting connections on this port.
• Closed: No service is running, but the port is reachable (no firewall blocking).
• Filtered: A firewall or filter is blocking access, preventing scan completion.

Common Ports Reference