To simulate a network, I came across a Graphical Network Simulator found at GNS3.net
There is a short tutorial on Youtube on how to setup GNS3 that can be found at
You will need Cisco IOS Images to run GNS3, that you can download at:
- http://sobek.su/Cisco/IOS/
- http://thepiratebay.org/torrent/4409592/Cisco.IOS.Monster.Collection.2008
