June 2007
Intermediate to advanced
600 pages
18h 19m
English
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Troubleshooting
If you change an access list, change NAT, or do anything else that can alter what
packets are allowed to flow through the firewall, you may not see the results until you
execute the clear xlate command.
Xlate is short for translation. A translation is created for
every conversation that is active on the PIX. To see what xlates are active on your PIX,
use the show xlate command:
PIX#sho xlate
10 in use, 114 most used
PAT Global 10.0.0.5(9364) Local 192.168.1.110(1141)
PAT Global 10.0.0.5(1211) Local 192.168.1.100(3090)
PAT Global 10.0.0.5(1210) Local 192.168.1.100(3089)
PAT Global 10.0.0.5(1209) Local 192.168.1.100(3088)
PAT Global 10.0.0.5(1215) Local 192.168.1.100(3094)
PAT Global 10.0.0.5(1213) Local 192.168.1.100(3092)
PAT Global 10.0.0.5(1212) Local 192.168.1.100(3091)
PAT Global 10.0.0.5(9324) Local 192.168.1.110(1127)
PAT Global 10.0.0.5(1047) Local 192.168.1.100(2958)
Global 10.0.0.11 Local 192.168.1.11The PAT Global entries are live connections from my
PC to the Web. I had a download running through a web browser, plus a few web pages open.
The last entry is a static translation resulting from the static configuration entered
earlier.
To clear xlates, use the clear xlate
command:
PIX#clear xlateWarning
When you clear xlates, every session on the firewall will be broken, and will need to be rebuilt. If your PIX is protecting an e-commerce web site, transactions will be broken, and customers may become unhappy. Clearing xlates should not be done unless there is ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.