Open Source for You May 2013 published two of my articles

Article 1: Graphing Network Performance with MRTG

Article 2: Monitoring and Graphing your Network with Cacti

November 2012 Linux for You article

I wrote an article for the November 2012 issue of Linux for You magazine.

Title: Getting Started with Tcpdump
This article is an introduction to a popular UNIX tool called tcpdump—a very capable command-line utility that allows you to capture network data.