Linux Forums unreachable.

[Ray Parrish]

Markus Schönhaber wrote:
> 24.02.2010 02:08, Tom H:
>
>   
>>> ray at RaysComputer:~$ traceroute linuxforums.org
>>> traceroute to linuxforums.org (174.132.123.98), 30 hops max, 40 byte packets
>>> 16  www.linuxforums.org (174.132.123.98)  99.159 ms  98.833 ms  99.290 ms
>>>       
>>> ray at RaysComputer:~$ sudo traceroute -T linuxforums.org
>>> 13  te7-2.dsr01.dllstx3.theplanet.com (70.87.253.10)  98.550 ms * *
>>> 15  te6-1.car13.dllstx6.theplanet.com (70.87.254.238)  102.195 ms
>>> 103.890 ms te5-1.car13.dllstx6.theplanet.com (70.87.254.234)  109.829 ms
>>> 30  * * *
>>>       
>>> Does that yield any clues? I note that linuxforums.org is not listed at
>>> the end of the last command's output.
>>>       
>> 1. Your DNS is working.
>>
>> 2. I do not understand the first traceroute. Whether I traceroute from
>> any version of Linux or from Windows, the end-point is a theplanet.com
>> box not www.linuxforums.org.
>>     
>
> That's probably because Ray added an entry for www.linuxforums.org with
> this address in his /etc/hosts file to rule out DNS problems.
>
>   
>> 3. I do not understand why traceroute works and traceroute -T does
>> not. Could you ip address have been blocked by theplanet.com?!
>> Strangely...
>>     
>
> That's indeed strange: UDP packets do reach the target, TCP packets don't.
>
> @Ray: you don't have any packet filter active on your machine or your
> DSL router, do you?
>   
No, but I note that the router portion of it is blocking one specific 
web site that does not match linuxforums.org. I suppose I could remove 
that entry, and retry if you think that could be the problem.

Later, Ray Parrish

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