Port Scanning
The process of sending network packets to a range of ports on a host to discover which services are running and accessible.
What is Port Scanning?
What is Port Scanning?
Port scanning is a fundamental reconnaissance technique used by both attackers and defenders. By probing port numbers (0-65535), a scanner can determine which ports are open (accepting connections), closed (reachable but no service listening), or filtered (blocked by a firewall). Service detection extends this by identifying what software and version is running on each open port. Regular port scanning of your own assets is essential for maintaining an accurate picture of your attack surface.
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