topic Re: DNS REVERSE LOOKUP PROBLEM PIX 515E in Network Security

DNS REVERSE LOOKUP PROBLEM PIX 515E

rlowe26 — Fri, 21 Feb 2020 07:14:30 GMT

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

Re: DNS REVERSE LOOKUP PROBLEM PIX 515E

mostiguy — Thu, 12 Feb 2004 21:23:54 GMT

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

Re: DNS REVERSE LOOKUP PROBLEM PIX 515E

rlowe26 — Fri, 13 Feb 2004 12:24:37 GMT

YES!

Re: DNS REVERSE LOOKUP PROBLEM PIX 515E

jmia — Fri, 13 Feb 2004 15:22:27 GMT

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.