I've been struggling with configuring my shiny new 871 ISR to work using NAT, and I've had absolutely no luck.
I can ping (from an inside PC) this inside interface of the router, as well as the outside interface of the router.
from the router, I can ping everything.
I just can't get from the internal PC to outside at all. I've snooped the traffic on another PC that is on the outside "WAN", and there's no traffic.
I've used the SDM tool to create the NAT rules, and also stripped out everything but the basics, but nothing seems to help.
This is really driving me crazy. Any help would be much appreciated. Maybe it's something too obvious that I'm missing?
You have "no ip routing" in your config. This prevents the router from functioning properly. try this: