nat and dns

Nick Drage nickd at
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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