jnettop – a utility for viewing traffic statistics in real time, sorted by hosts / ports.
The installation command in Ubuntu/Debian:
sudo apt-get install jnettop
The installation command in CentOS:
sudo yum install jnettop
An example of a simple start:
sudo jnettop
An example of a start with a network interface:
sudo jnettop -i eth0
I’ll describe the possible startup options:
-h (help)
-v (view version)
-c (disable content filtering)
-d (write debugging information to a file)
-f (reading the configuration from the file, if not specified, then the file is searched for ~/.jnettop)
-i (to capture packets from the specified interface)
–local-aggr [none|host|port|host+port] (set local aggregation to the specified value)
–remote-aggr [none|host|port|host+port] (set remote aggregation to the specified value)
-n (do not resolving IP to DNS names)
-p (inclusion of promiscuous mode to receive all packets that come to the network interface)
-s (selects one of the rules defined in the .jnettop configuration file (by its name))
-x (allows you to specify a custom filter rule. this allows you to use the syntax of the tcpdump style. do not forget to include the filter in quotation marks when starting from the shell)
For CentOS, ‘sudo yum install jnettop’ results in an error since jnettop is not available in the default repositories. First, run the command ‘sudo yum install epel-release’ then you can install jnettop as described.
cheers,