For political reasons I'm stuck needing a firewall appliance I can put between our router and our network. But I need to not have to change the NAT address of the router (192.168.0.1), nor the gateway of the client PC's.
Any recommendations for a firewall appliance that will operate at the hardware layer, or something along those lines? I guess I'm looking for pure packet inspection without VPN, DHCP, etc.
Suggestions? Ideas?