DNS Ports
Jonathan de Boyne Pollard
J.deBoynePollard at tesco.net
Wed Jul 23 11:25:26 UTC 2003
DH> I know DNS uses UDP to send and get data.
JdeBP> You need to un-learn this, because it is wrong.
KD> Participants in the DNS protocol *do* use UDP to send and
KD> get data. Every single example in your web page opens up
KD> holes for UDP. So in what sense is the original poster
KD> "wrong"; what, specifically, do they need to "un-learn"?
He needs to un-learn
DH> DNS uses UDP to send and get data.
which is wrong, and to learn
DH*> DNS uses both UDP and (on occasion, and depending
DH*> from exactly what data are being served) TCP to
DH*> send and get data.
which is correct.
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