We have a company that has a NETGEAR ProSafe VPN Firewall FVX538
router that we have had no problems with and has worked very well for years. A new company has come on board that requires a site to site VPN between the 2 sites and they require us to use a different subnet that what we currently have to connect to them as they have a number of other sites and our subnet conflicts with one that they already have.
Is there any way to fool the hardware into thinking that we are the subnet that they require? The new site has a cisco asa firewall/router and I have been told it can perform Policy NAT. Is it possible to do something like this on the netgear or will this need to be replaced?