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
+1-416-414-9934 SMS
PGP Key: 7B447CD9 Fingerprint: 29A2 63C5 F623 EE9D 2453 B840
2818 5CA7 7B44 7CD9
Linux Guru Since 2002 Without security there can be no
privacy.
-----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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