I am working with a VPN tunnel between a Cisco 1710 (branch) and Cisco 2610 (HQ). The tunnel is UP, however, the branch is unable to browse to a site using internal IP hosted at HQ. There are other branch connections with Cisco 1710 routers that use similar, but not exact, configurations. I have gone through line by line, but unable to identify the failure. I am prepared to paste both configurations if someone would care to review.
I have this problem too.