Network troubleshooting, any experts?

[Alexander Dalloz]

Am Mi, den 28.04.2004 schrieb Elam Daly um 22:35:

> Does DNS resolve names through UDP?  Would that explain why I can't telnet
> to port 53 on the DNS servers,yet still get name resolutions?  Am I 
> wrong conceptually on how DNS works? 

Yes, you are wrong and yes, telnet uses TCP. That name resolving uses
UDP on port 53 does not mean you can then block TCP port 53. It must be
open too.

> Thanks
> Elam

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG key 1024D/ED695653 1999-07-13
Fedora GNU/Linux Core 1 (Yarrow) on Athlon CPU kernel 2.4.22-1.2188.nptl
Sirendipity 22:40:51 up 1 day, 21:29, load average: 0.21, 0.22, 0.21 
                   [ Γνωθι σ'αυτον - gnothi seauton ]
             my life is a planetarium - and you are the stars
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