04-24-2008 10:19 AM - edited 03-11-2019 05:36 AM
When using no nat control on a FWSM, I would assume that the xlate table (sh xlate) should be empty.
Is this correct as I am seeing some one to one entries in the xlate. I am not seeing every single host, only approx 200 out of 5000 potential hosts.
Can someone confirm this ?
Thanks,
Jon
Solved! Go to Solution.
05-16-2008 10:43 PM
By default, the FWSM creates NAT sessions for all connections even if you do not use NAT. To avoid running into the maximum NAT session limit, you can disable NAT sessions for untranslated traffic (called xlate bypass).
To enable xlate bypass, enter the following command:
hostname(config)# xlate-bypass
Syed
04-30-2008 09:18 AM
No , using no nat control onlt disables strict nat to be applied on the traffic traversing through the firewall. If a nat policy is there it will still be applied and there will be entries in sh xlate.
05-15-2008 11:48 PM
I am not using any nat in the config. All references have been removed. In my opinion I shouldn't be seeing xlates if there is no nat policies configured.
05-16-2008 10:43 PM
By default, the FWSM creates NAT sessions for all connections even if you do not use NAT. To avoid running into the maximum NAT session limit, you can disable NAT sessions for untranslated traffic (called xlate bypass).
To enable xlate bypass, enter the following command:
hostname(config)# xlate-bypass
Syed
05-19-2008 12:44 AM
Thanks Syed,
I found out this command the last time I was on site, but your explanation confirms my actions.
Thanks,
Jon
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: