I'm using Apple Airport Extreme with a Modem (Netgear or Linksys) with no problems,
I'm also able to activate the Apple service "Back To My Mac".
Having also an USR8200, i wish to use it as FIREWALL only, connected to the Airport Exreme and the Modem.
How to connect and configure the USR8200 to do this?
Avoiding double NAT and duplicate router issue between Airport Extreme and USR8200.