Monitoring how much bandwidth is used is a fundamental task to check the status of your servers, or just your desktop, so i always test new tools to see if i find something good. This is the third article of this series and in this one i’ll take a look at Bmon, speedometer and Nload.
Today I’ll show you two tools to be used int the terminal to monitor your network and the active connections: iptstate and pkstat
IPTState is a top-like interface to your netfilter connection-tracking table.
Using iptstate you interactively watch where traffic crossing your netfilter/iptables firewall is going, sort by various criteria, limit the view by various criteria. But it doesn’t stop there: as of version 2.2.0 you can even delete states from the table!
The only requirements are a curses library (usually ncurses), and libnetfilter_conntrack version 0.0.50 or later.