Disable ICMP at border routers? (Score 2, Interesting)

If you block incoming ICMP at your gateway routers, then DoS attacks should not be a possible attack. Without the target being able to send a ping back to the reflector because of ICMP filtering, DoS will fail. And if your network is the target, the reflector will not be able to attack either. As far as I know, DoS is simply ICMP floods to the whole subnet, and ICMP access lists in Cisco equipment is a piece of cake. Just my $.02