Install iptstate by entering the following commands in the terminal:
sudo apt update sudo apt install iptstate
Description:
top-like interface to your netfilter connection-tracking table
IP Tables State (iptstate) was originally written to implement the "state top" feature of IP Filter in IP Tables. "State top" displays the states held by your stateful firewall in a top-like manner. . Features include: - Top-like realtime state table information - Sorting by any field - Reversible sorting - Single display of state table - Customizable refresh rate - Display filtering - Color-coding - much more... . To use iptstate, CONNTRACK should be enabled in your kernel.
Homepage: http://www.phildev.net/iptstate/
Version: 2.2.6-1
Section: universe/admin