Nmap can be very useful in building network maps, important in complex sites with lots of network segments. You can also scan just for a particular port, such as this nmap command looking for ...

As with the first nmap command shown, you could run a port scan of the entire 192.168.0.x network using 192.168.0.0/24 as the scan target. The output from this nmap command lists the open ports ...

nmap -sT [your external IP address] This command scans all devices on a typical home subnet for open TCP ports. However, the best way to run Nmap is via an online Linux server.

New features in Nmap 7.40 include Npcap 0.78r5, for adding driver signing updates to work with Windows 10 Anniversary Update; faster brute-force authentication cracking; and new scripts for Nmap ...