NetMan - nmap

• Nmap Reference Guide

Some useful nmap scans

Using nmap to inventory a network

The following command with nmap with root privilegies (or using sudo):

sudo nmap -sP 192.168.0.0/24 | awk '/Nmap scan report for/{printf $5;}/MAC Address:/{print " => "$3;}' | sort

results in:

192.168.0.80 => 00:50:56:AF:56:FB
192.168.0.97 => 00:26:73:78:51:42
server1.company.internal.local => 3C:D9:2B:70:BC:99
...

Or, a little more useful:

sudo nmap -n -sP 192.168.0.0/24 | awk '/Nmap scan report/{printf $5;printf "\t";printf $6;printf "\t";getline;getline;print $3;}' | awk '{printf $2;printf " ---> ";printf $1;printf "\n";}'

(Good luck typing that in by hand...)

Want DNS?:

sudo nmap -sP 192.168.0.0/24 | awk '/Nmap scan report/{printf $5;printf "\t";printf $6;printf "\t";getline;getline;print $3;}' | awk '{printf $3;printf " ---> ";printf $1;printf "\n";}'

or both name & address?:

sudo nmap -sP 192.168.0.0/24 | awk '/Nmap scan report/{printf $5;printf "\t";printf $6;printf "\t";getline;getline;print $3;}' | awk '{printf $3;printf " ---> ";printf $2;printf "\t";printf $1;printf "\n";}'

But, for some reason, lack of a name causes odd formatting. And, nmap seems to fail to give the mac address of the machine doing the scan.