DNS issues on Pix 7.0(2)

abdi.aye · ‎04-28-2006

Hi Guys,

I recently upgrade my site which has a single Pix515e and running ver 6.3(3) with two redundant pixes 515e running 7.0(2). Besides configuring failover configuration differently, I copied my original configs and pasted on ver 7.0(2). Everythings worked beside my DNS. I have a couple of Linix server inside my local(Privte) segment. Could some check the two config and determine why it does not work.

Regards

Abdi

Fernando_Meza · ‎04-29-2006

Try changing the packet size of your dns inspection. This is the size on your PIX but the ASA defaults to 512 and will drop bigger packets.

policy-map global_policy

class inspection_default

inspect dns maximum-length 1024

Hope it helps ... rate it if it does !!!

Fernando_Meza · ‎04-29-2006

Also make sure the below entries are correct on your access-list 100 ... Your PIX shows a different IP address:

access-list 100 extended permit tcp any host 63.x.x.98 range 51 domain

access-list 100 extended permit tcp any host 63.x.x.99 range 51 domain

access-list 100 extended permit udp any host 63.x.x.98 range 51 domain

access-list 100 extended permit udp any host 63.x.x.99 range 51 domain