Hello, Over the past year studying network theory, I've never been able to practice. That's why I decided to make a laboratory to practice what I learned. Here is the topology that I just made with Visio: I have some questions: How to choose between fast ethernet and Gigabyte cables ? Where is important to use GB? Does Snort and Nagios are well placed (I have never used, I just know what's their goal? Have you any ideas for improvement my topology? should I use another router to improve this network? What do you recommend for the firewall? I thought about pfSense. sorry for my english :/