Nmon - Linux Performance Monitoring Tool

Nmon – Monitor Linux System and Network Performance

If you are looking for a very easy-to-use performance monitoring tool for Linux, I highly recommend installing and using the Nmon command-line utility. Nmon short for (Ngel’s Monitor), is a fully interactive Linux system

IPTraf-ng - Linux Network Monitoring Tool

IPTraf-ng – A Console-Based Network Monitoring Tool

IPTraf-ng is a console-based Linux network statistics monitoring program that shows information about IP traffic, which includes information such as: Current TCP connections UDP, ICMP, OSPF, and other types of IP packets Packet and