Installing and using trafshow

trafshow – a utility for displaying traffic statistics passing through network interfaces.

Since the utility is included in the Netdiag (Net-Diagnostics) set, everything is installed together.

You can install Netdiag and trafshow in Ubuntu / Debian using the following command:

sudo apt-get install netdiag

In CentOS/RedHat/Fedora:

sudo yum install netdiag

Command viewing guide:

man trafshow

Simple launch:

sudo trafshow

I’ll describe the possible startup options:
-v (view the version of the program)
-n (do not convert the addresses into DNS names, and port numbers for example 80 in http, etc., in the running program, you can toggle the option with the N key)
-a len (summarizing traffic flows using the IP prefix IP netmask len, in the program is switched by pressing the A key)
-с conf (using an alternative color configuration instead of the standard / etc / trafshow)
-i name (indication of the network interface)
-s str (search for an item in the list and go to it)
-u port (listening to the specified UDP port for Cisco Netflow, the default number is 9995, to disable use 0)
-R refresh (update interval, default 2 secs, in the program is changed with the R key)
-P purge (cleaning of obsolete records after the specified time, by default 10 seconds, in the program is changed by the key P)
-F file (using a file for filters)
expr (what packages will be displayed, if not specified, then all)

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