I would like to clone a network environment that exists at our work place. Our network has a Domain, 3 VLANs, 3 manageable HP switches, VMware and standard servers that are running server 2003, Exchange. We also have FTP Linux server (which I don’t know much about at this stage), 2 firewalls, email appliance and web appliance (proxy). I have OK understanding of the way everything works, however; not enough for me to feel very comfortable in case something goes wrong. I want to be able to make changes to reinforce my knowledge or improve things without touching a live network.
Is there a simulator or other software (free would be nice) that I can use to clone our network?