Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

How to do it...

To setup a simple monitoring system with Nmap, we are going to need to do a few things:

1. Create the directory /usr/local/share/nmap-mon/ directory (or whatever location you prefer) to store all the files required for our monitoring system.
2. Scan your targets and save the result in XML format in the directory that you just created:

# nmap -oX base_results.xml -sV -Pn <target>  

The resulting file base_results.xml file will be used as your base file, meaning that it should reflect the known good versions and ports.

3. Create the file nmap-mon.sh file in the directory you created earlier and paste the following code:

#!/bin/bash  #Bash script to email admin when changes are detected in a network using Nmap and Ndiff.  #  #Don't ...