.. _monitoringblue: 4. Try monitoring techniques (netflow, flow monitoring) ======================================================== Introduction ^^^^^^^^^^^^^ | In my private lab, I run many different applications and servers (none of them commercially or prod might I add) and it might be interesting to apply netflow/ flow monitoring solutions PfSense ^^^^^^^^ | At the forefront of my private lab a pfSense machine runs as a firewall/routing etc. all in one. This is a freebsd based OS -- which also has a package manager. I run ntopng on this site which shows all of my network flows; due to it containing large amount of private traffic I've decided to censor the contents of the screenshots I took. .. image:: https://i.imgur.com/xdK9Rdp.png