[RESOLVED] Ping woes

[Doogle]

I have a dynamic dns entry for my Internet connection (e.g. doogle.no-ip.info). This resolves to the actual IP address of my Router. However, attempting to Ping either the IP Address or the DNS fails (100% loss). I can ping the local IP address with no problems. (e.g. 192.168.1.88)

I've turned off windows firewall and avg virus which makes no difference. Has anyone got any ideas?

[thetimmer]

you're trying to ping the public address from the private side of your router correct? Can you ping other public addresses? I know some routers can black-hole or tarpit pings ( which I believe are icmp packets ... forgive me if that's the wrong type I'm a network misfit )

[Doogle]

Yes, I can Ping things like google. I'm guessing that the router needs some sort of configuring but I can't see what.

[thetimmer]

Okay, here is an old discussion of this issue from folks that appear to be a lot more in the know than I.

It looks like you need to check if your router supports Nat Loopback. Hope this helps.

[dilettante]

Most SOHO NAT routers have an option to "blackhole" ping requests since they are a critical tool used in many penentration exploits. And most of them probably have the option turned on by default.

It may be called any number of things, such as "WAN Blocking."

[Doogle]

It appears that my Router doesn't have an option to unblock. As it happens the original problem (unable to contact a server) has been fixed. I was trying to use Ping to chase the problem down.

Thanks for the help.