cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
490
Views
4
Helpful
3
Replies

DNS REVERSE LOOKUP PROBLEM PIX 515E

rlowe26
Level 1
Level 1

Gentlemen, I really need your guidance. I have a situation whereas I cannot do DNS REVERSE LOOKUP thru my Pix 515E. There are sites on the .mil (Niprnet), which I have here, that require a DNS REVERSE LOOKUP. When I attempt to go to the site, it gives me the DNS Error and reflects my PAT Address of my Firewall. I have tried everything that I know, everything that I have researched on the Cisco web site, and to no avail, I still cannot get DNS REVERSE LOOKUP THRU MY Firewall. I can only access those particular sites from my two OUTSIDE DNS Servers. Yes, my DNS Configurations inside and outside are correct. Any Help would be greatly appreciated. I have exhausted all possibilities. Thanks in advance! Ron

3 Replies 3

mostiguy
Level 6
Level 6

do you have a reverse dns record defined for the ip address on the PAT ip address?

YES!

Hi Ron,

Have you seen this doc :

http://www.cisco.com/warp/public/110/pixperformance.html#reversedns

The above is for troubleshooting Reverse DNS Lookup.

Regards - Jay.

Review Cisco Networking products for a $25 gift card