Linux Forums unreachable.

[Markus Schönhaber]

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?

-- 
Regards
  mks