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Pinging website's DNS name is timed out

By mishafiq ·
I have NT network connected to ISP through T1 using Cisco router.

I can browse any pages on the web. But when I ping those DNS names mostly request is timed out but I can see the IP address of the site. I would like to know that why that happens.

Any knowledge is appreciated. Thank you.

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Pinging website's DNS name is timed out

by McKayTech In reply to Pinging website's DNS nam ...

The most likely answer is that a router or firewall in your path to the Internet filters ICMP packets as a security measure.

A router en route to a Web site can be set up this way so the site is reachable using http protocol on port 80 but if youwere to ping by either IP address or hostname, you would get no response because it doesn't respond to the ICMP packets sent out by PING.

It does make troubleshooting more challenging, however, since PING is a time-honored way to testing connectivity to a particular IP address.

paul

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Pinging website's DNS name is timed out

by mishafiq In reply to Pinging website's DNS nam ...

The question was auto-closed by TechRepublic

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Pinging website's DNS name is timed out

by savatovic In reply to Pinging website's DNS nam ...

I agree with Paul.
You may also try from command prompt:

tracert www.techrepublic.com

This will trace your route to destination address.
However, this will also fail if you are behind firewall.

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Pinging website's DNS name is timed out

by mishafiq In reply to Pinging website's DNS nam ...

The question was auto-closed by TechRepublic

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Pinging website's DNS name is timed out

by mishafiq In reply to Pinging website's DNS nam ...

Thanks a lot for the answers guys!

Like you said maybe ICMP packets are filtered but If the ICMP packets were filtered I should not be able to ping any address but I can ping some like www.yahoo.com and can't ping some like www.aol.com.

I am looking for the answer for the knowledge and curiosity. If somebody can explain it further I will be grateful.

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Pinging website's DNS name is timed out

by NetWill In reply to Pinging website's DNS nam ...

some site stopped reply to ICMP packets to stop denial-service attack

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Pinging website's DNS name is timed out

by mishafiq In reply to Pinging website's DNS nam ...

The question was auto-closed by TechRepublic

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Pinging website's DNS name is timed out

by Beefhead In reply to Pinging website's DNS nam ...

I get the same results from pinging the 2 sites you mentioned (Yahoo pings AOL does not). I just got my DSL line installed, and put in a Linksys router (Very cheap, and has passed many security tests so far, and a truly Plug and Play configuration.) While going through the router manual (Yea, so I am that kind of Geek) they state that the router can block WAN requests which blocks the ping utility. Apparently this is becoming more and more common, especially with D.O.S. attacks and the like.

So, it is not your firewall that is causing this
FYI:
Ping times out to www.aol.com but gives the 205.188.146.23 IP adderss.
Tracert www.aol.com hops 14 times before getting the message that the destination hosts in unreachable.

Long live Ping!

Hope this sheds some light.

Beef

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Pinging website's DNS name is timed out

by mishafiq In reply to Pinging website's DNS nam ...

The question was auto-closed by TechRepublic

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Pinging website's DNS name is timed out

by mishafiq In reply to Pinging website's DNS nam ...

This question was auto closed due to inactivity

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