Use the official trial offered by the developer. This allows you to test the full feature set legally for a limited time.

A free tool favored by Windows users for its ease of use and integration with RDP. Best Practices for Network Scanning

Pirated versions cannot access official security patches, leaving your own network vulnerable to the very threats you are trying to scan for.

NetScan X is a professional-grade network utility tool. It is designed for system administrators and security researchers to: Discover all active IP addresses on a network. Identify open ports and active services. Map network topologies. Detect potential security loopholes. The Risks of "Free" License Keys

There are several powerful, completely free, and legal alternatives used by professionals worldwide:

Regardless of the tool you use, always follow these security protocols: