We have the need to allow three remote sites to connect via VPN to our network. The sites already own either a Linksys BEFSX41, a D-Link DI-804HV or a D-Link DI-808HV -- all of which (as far as I can tell) support establishing VPN connections using IKE and IPSec.
I was thinking of using a CISCO PIX 501 (configured as my network's gateway) to accept the VPN connections. (I would like all of the remote offices to get their own PIX 501's as well, but I'm told cost is an issue.)
I putting this up on EE because I've never done anything like this before and I don't want to make a mistake before I even get started.
Will the CISCO work with non-CISCO VPN endpoints?
Is the CISCO PIX 501 reliable, or am I going to be fighting sporadic connectivity issues?
How hard is it to setup a PIX 501?
The current router/firewall at our office is using NAT. Can the PIX act as Firewall/NAT device, or do I have to put something behind it?