nat and dns

Nick Drage nickd at metastasis.org.uk
Thu Sep 23 13:23:31 CEST 2004


On Thu, Sep 23, 2004 at 01:09:43PM +0200, Samuel Díaz García wrote:
> For DNS query only UDP is necesary, not TCP.

Heh, that's such a common misconception that I almost mentioned it in my
original email.  Most DNS queries take place over UDP, however if the
reply to the query is especially large then a new TCP connection is
opened between the client and server.  Also zone transfers take place
over TCP IIRC, it depends what kind of functionality the DNS server will
be providing.

-- 
mors omnia vincit



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