I'm doing some research into co-location for some new servers I'm putting together and I'm getting very, very confused on the firewall / VPN side of things. Basically the servers I have are these:
2 x Web Server
1 x Database Server
There may be one more in the future, but that's going to be about the limit. As I see it, I'm going to have a port in the switch in the rack (Shared) for each one of these machines. What I want to do is put a firewall in to protect all of these servers and also provide VPN access so I can get at the operating system for administration (The database server in particular).
So far I've been looking at the Cisco (http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/index.html
) and Watchguard (http://www.watchguard.com/products/fireboxx.asp
) lines of firewalls. But I really have no idea where to start. I assume that I would only be using one connection from the switch in the rack, and I need the firewall to act as a switch so that all of the servers can have a connection (I don't currently have a seperate switch). I've been told my my colocation provider that it's going to need to be a rackmount model too.
Am I looking at the right products for this? I don't want to spend a huge amount of money if possible (Coming out of my pocket!). Oh, and any and all advice on VPNs and how they work is appreciated. Assume no prior knowldege on my part!