DNS was [Gllug] IPSec

[Iain Conochie]

On Tue, 12 Feb 2002 tet at accucard.com wrote:

>
> >>the uni stops all UDP.
> >
> >Wow: how to they do DNS then ?
>
> It's a common misconception that DNS only works over UDP. In fact,
> blocking 53/tcp is a common way of firewalls causing intermittent
> network problems.

Isn't TCP for DNS Zone transfers, and UDP is used for actual name
resolution??

http://www.ietf.org/rfc/rfc1035.txt 4.2.1

Iain

>
> Tet
>
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