said by Doctor Olds:
You should set the Modem to Bridge Mode/Bridged Ethernet Mode and then setup PPPoE in your Linksys befrsr41. Otherwise you are cascading Routers and performing NAT multiple times (Double-NAT in your case) which isn't the optimal setup.
the cascading and double NAT will happen because the 2200 modem is also a router doc?
and since the 2200 modem is a router too, will it do NAT if you connect the 2200 to the computer alone without a router, thus giving you the security benefits of NAT?