November 2010
Intermediate to advanced
216 pages
6h 28m
English
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Debugging Your Rule Set
When your configuration does not behave as expected, there may be an error in the rule set logic, so you need to find the error and correct it. Tracking down logic errors in your rule set can be time-consuming, and could involve manually evaluating your rule set, both as it is stored in the pf.conf file and the loaded version after macro expansions and any optimizations.
Users often initially blame PF for problems that turn out to be basic network problems. Network interfaces set to wrong duplex settings, bad netmasks, and faulty network hardware are common culprits.
Before diving into the rule set itself, you can easily determine whether the PF configuration is causing the problem. To do so, disable PF with pfctl -d to see ...
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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.