Verify TCP port accessibility on remote targets using client-side WebSocket connections. Useful for scanning firewalls.
Enter a hostname and scan common service ports (21, 22, 80, 443, 3306).
How Port Scanning Diagnostics Work
A port scanner checks if specific TCP service ports are open and listening on a target host. In proxy networks, open ports (like 80 or 443) facilitate standard web browsing, while other ports run administration services (like SSH on 22 or MySQL on 3306). Checking port states is key to auditing server security configurations.
Scanning Ports via Web Browsers
This tool uses HTML5 WebSocket connection attempts to scan common ports. Because the browser restricts raw socket access, the tool attempts connection handshakes and analyzes response patterns to determine if a port is closed, blocked by a firewall, or open.
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