I've migrated from cisco 1721 to 1841.
This router has 2 adsl wics(1wic 1hwic) and one lan interface with 2 lan addess configured. Behind the router is a firewall.
See the attached file.
This firewall enables a tunnel, because of this there is no vpn config into the router.
This config ran fine into with 1721 but this 1841 has the latest IOS which has a new ios firewall. I think there is a problem with the rules.
Remote ips are:
access-list 117 permit ip host 18.104.22.168 any
access-list 117 permit ip host 22.214.171.124 any
access-list 117 permit ip host 126.96.36.199 any
And the outside interface:
interface ATM0/1/0.1 point-to-point