Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Monitoring traffic on your network is only as important as the data and or computers you want to protect. Understanding how to do basic network troubleshooting will save you both in wasted time and money. Every Linux operating system comes with a number of command line tools to help you diagnose a network problem. In addition, there are any number of open source tools available to help you track down pesky network issues.
In this article we'll take a look at what's available from the command line and from freely available applications. Knowing a few simple commands and when to use them will help you get started as a network diagnostic technician. We'll use Ubuntu 10.04 desktop as our test platform, although all of these work in other distros as well.