Router Ping problem

Im using a cisco 2801 router to access the internet. Its configured with NAT and is working well. The problem is that i cant ping well known domain names like www.google.com or www.yahoo.com but i can ping their ip addresses. The ip domain-lookup command is not disabled either.what could be the problem?

i will today ask my teacher and will post here soon..!!

its a good issue.. means it sounds interesting...

Try changing your DNS address with a public DNS and then ping again. It is a dns server problem

Losh,

I agree with Sose, it must be a DNS issue. I'm assuming you are unable to ping the urls you mentioned from the router's console.

Try adding a few name servers to your router's configuration and also enabling the DNS service.

You'll find all the information you need on our 'Configuring DNS Services for Cisco routers'

www.firewall.cx/tk-cisco-routers-dns.php

Good luck!

Thanx for that. I use my ISPs two dns servers but let me try adding a few public dns servers n see if it works. Any suggestions on which ones i should try?

You can try Google's DNS servers : 8.8.8.8 and 8.8.4.4.

Let us know of the results.

Cheers,