Palo Alto firewalls and DNS delays

[Julian Y Koh <kohster () NORTHWESTERN EDU>]

[Side Note: Anyone want to start up a mailing list for PA users, like the one that Stanford runs for PacketShaper users 
and the one run by UNC for TippingPoint users?]

For those people running PA firewalls, has anyone seen an issue where DNS queries get delayed through the box by 
anywhere from 1-5 seconds?  We've got a case open with PA, but I thought we'd just cast a quick line out here to see if 
we caught anything on it.  

My gut feeling is that somehow the box is trying to do some reputation or botnet C&C lookup, but supposedly that was 
turned off during testing with no change in behavior.

We're running 5060s with 4.1.11 software.  

Thanks in advance!


-- 
Julian Y. Koh
Acting Associate Director, Telecommunications and Network Services
Northwestern University Information Technology (NUIT)

2001 Sheridan Road #G-166
Evanston, IL 60208
847-467-5780
NUIT Web Site: <http://www.it.northwestern.edu/>
PGP Public Key:<http://bt.ittns.northwestern.edu/julian/pgppubkey.html>