RE: DNS ACL ?

["Jason Muskat" <Jason () TechDude Ca>]

As long as less then a handful for RR are returned UDP is fine.  ... Don't
forget to allow the DNS servers outbound reply.

Regards,
 
Jason Muskat, GCUX, de VE3TSJ
Jason () TechDude Ca
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-----Original Message-----
From: John Hally [mailto:JHally () epnet com] 
Sent: Friday, November 11, 2005 8:35 AM
To: 'pen-test () securityfocus com'
Subject: DNS ACL ?

Hello All,

 

I need a sanity check regarding DNS ACLs.  For external facing DNS servers
you need to allow only udp/53 inbound, correct?  I know tcp/53 is used for
zone transfers and requests/replies greater than a certain size, but they
shouldn't typically happen for general dns queries correct?  

 

Thanks in advance!



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