I have a question about my Cisco 877, I am running "c870-advsecurityk9-mz.124-20.T1" but when I try to set-up QoS under SDM it says I am running the wrong IOS. Also under Firewall and ACL I am not able to set-up any P2P protection (again it says I am running the wrong IOS).
Question is, which IOS supports these features?
For QOS support you need either Advanced IP Services or Advanced Enterprise - see attached Q&A table, about 1/4 of the way down under "General Software Features"
Not too sure about the P2P protection - do you mean DMVPN or GETVPN ?