Hi I tried calling MTS tech support on this they have no ideal why I can not be pinged any one have this problem with a Actiontec model GT784WNV any help would be good have the firewall on nat only so it's off.
The firmware from Actiontec blocks ping from the public interface. As I recall they did this to limit exposure to probes from the Internet. As far as we can see there is no way to disable this, and at the time we couldn't really see a downside. I can't remember if all ICMP is blocked, have you tried a traceroute to it?
Interesting enough, it's unique to the 784, possibly because it's firmware is more recent than the 701 or 724. We are looking at new firmware this year, so I will ask my tech specialist to request a change to allow an override somewhere in the GUI.