Question About nslookup

Tiago Cury - Sun do Brasil Tiago.Cury at brazil.sun.com
Mon Nov 13 17:48:06 UTC 2000


By default, nslookup make queries using UDP packets. Most BIND resolver queries 
are made with UDP, so the default nslookup behavior matches the resolver. As the 
resolver can be instructed to use TCP, so can nslookup.

tanks,
Tiago



> X-Unix-From: sumit at cs.bu.edu  Mon Nov 13 14:51:32 2000
> Date: Mon, 13 Nov 2000 11:49:48 -0500 (EST)
> From: Sumit Mehrotra <sumit at cs.bu.edu>
> X-Sender: sumit at csb.bu.edu
> To: bind-users at isc.org
> Subject: Question About nslookup
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> 
> A quick question about nslookup. Does it use UDP or TCP by default? If it uses 
both, under what conditins does it use either kind of socket?
> 
> Correspondingly, could someone point me to the portion of BIND code, where the 
incomingg messages from nslookup are accepted, also what kind of socket does 
BIND listen on, for requests?
> 
> Thanks
> - Sumit
> 
> 
> 
> 


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