Linux - Iftop
iftop command listens to network traffic on a named network interface, or on the first interface it can find which looks like an external interface if none is specified, and displays a table of current bandwidth usage by pairs of hosts. iftop is a perfect tool for remote Linux server over ssh session. iftop must be run by the root or the user who has sufficient permissions to monitor all network traffic on the network interface. Type iftop command at tge shell prompt to display traffic: ...