I have a question about security of VLANs that I'm setting up for a friend of mine's business.
General Network Setup. There is a hard wired internal network, that has a firewall protecting it from a perimeter network, which in turn has a firewall protecting it from the open internet. The perimeter network is a mix of wired and wireless connections.
The issue is they are expanding and would need more ports in a different part of a building and there would be a mix of ports belonging to either the internal and perimeter network. There will be two physically separate links ran to the new switching area, one for the internal and one for the perimeter.
He is on a budget so I was trying to cut cost but still provide for scalability and security. Initially I wanted to make sure he had roughly 24 ports available for each of the two networks. I saw that 1 48 port switch is cheaper than two 24 port switches and in the future, if need be, I could buy a second switch if necessary, plus more than likely the internal network will be heavier on ports than the perimeter so I would be able to mix the ports as necessary if its all on one switch.
So my question is, how secure (how hard would it be to jump between VLANs) if the only spot they physical touch is on just the one switch?