External Service Auditor

Scan domains for standard service vulnerabilities. Identify open entry points for HTTP, SSH, FTP, and Database listeners.

Querying Port States via Socket Simulation...

Understanding Port Scanning

Port Scanning is a method used by engineers and security researchers to identify which ports on a network are open and listening to connections. Each port is associated with a specific service type (e.g. 22 for SSH, 80 for HTTP).

TCP vs UDP: TCP scans are connection-oriented and require a 3-way handshake. UDP scans are "best-effort" and harder to detect. For security, any port that isn't strictly required for public service should be closed or firewalled.