That's it Nmap it is a free and open source security scanner which you use to check the network and its security.
Use
- Network inventory
- management timetables of services offered
- monitoring slot
- ή uptime services
Mode
It uses a series of IP packets that are shipped and then collected information from them.
Nmap determines which machines are available on the network, what services or hosts they offer, which operating systems are in progress, what types of firewall are in use, and much more.
Download Nmap
https://nmap.org/download.html