For users of linux distro Backtrack especially users already familiar with the name Nmap (Network Mapper), designed to be able to scan the network, therefore a lot of system and network administrators who use it as one to secure jarangannya. But as much as if you never use a trick to the running Nmap, so this time I give 10 ways to use it.
1. Get a list of servers with a specific port is open :
nmap -sT -p 80 -oG – 192.168.1.* | grep open
to change the port just replace the 80 with the number of ports to be used. command "man nmap" to see how the other
