Firewall Wizards mailing list archives
Re: PIX 6.1 xlate issues
From: "kevin horvath" <kevin.horvath () gmail com>
Date: Wed, 3 Sep 2008 19:18:41 -0400
this sounds odd. if it was an xlate issue with it getting overwhelmed then not just the dns server but other devices would also have connectivity issues. You should increase you logging level to informational and see what the logs say when you encounter this issue. I did have a similiar issue years ago (details are kind of hazy now) but it involved the dns fixup. Try increasing your fixup to something like 1024 since there shouldnt be a reason for dns packet to get larger then this (fixup protocol dns maximum-length 1024) or just disable dns fixup altogther and see if that resolves your issue. This was due to the connection table filling up due to exchange making abnormally large dns queries. Kevin On Wed, Aug 20, 2008 at 2:02 AM, B Shivanthan <shivi () batelco com bh> wrote:
Hello there, I am using a PIX 6.1 (I know its quite old and replacement procedures already in place) and facing problems with xlates getting overwhelmed. I have this firewall serving our corporate network, where I have a proxy server, SMTP server, DNS server and about 1500 users browsing the web through the proxy, along with other servers which I do static NAT on. Overtime, my SMTP server loses connectivity with the DNS server (residing outside the firewall) for name resolution and the only remedy to this is to clear the xlate. I've set the xlate timeout to as low as 30 mins, but the problem still persist. Does anyone know of any resolution to this problem ? Many thanks Regards Shiv _______________________________________________ firewall-wizards mailing list firewall-wizards () listserv icsalabs com https://listserv.icsalabs.com/mailman/listinfo/firewall-wizards
_______________________________________________ firewall-wizards mailing list firewall-wizards () listserv icsalabs com https://listserv.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- PIX 6.1 xlate issues B Shivanthan (Sep 03)
- Re: PIX 6.1 xlate issues kevin horvath (Sep 04)
- Re: PIX 6.1 xlate issues Christopher J. Wargaski (Sep 04)