Nmap (Network Mapper) is a security scanner originally written by Gordon Lyon (also known by his pseudonym Fyodor Vaskovich) used to discover hosts and services on a computer network, thus creating a "map" of the network.

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tcp port 554 open

I was running a routine security check of the machines I manage today and found in my nmap scans that TCP/554 is open, although when I run 'netstat -an' on the machine itself it doesn't show up, same ...
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Network Scan, Filtering for Top Level Domain

Greetings, I have a list of 2 /24s worth of IP addresses in seperate text files. What I am interested in doing is finding a way to resolve the hosts of these IP addresses and filter out to display ...