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If you need to scan your network, nmap is the tool to use.
Nmap can be installed on any Linux distribution.
Nmap has several very handy commands.
The nmap command (short for network mapper) is a network exploration/security auditing tool that can rapidly scan networks to help you find out what hosts are available. With nmap, you can discover open ports and services, and even find out what operating systems are on your network.
I've used nmap to find out what machines are on a network and what ports/services are open. If I find a port that shouldn't be open, I can close it to avoid security issues.
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