September 2007
Intermediate to advanced
336 pages
9h 7m
English
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Forensics Mode
Many people have old syslog files that contain iptables log data lying around on their systems. By using psad in forensics mode, these old logfiles can be used to inform you of suspicious traffic that took place in the past against your system. This information can become particularly helpful if you are trying to track down a real intrusion and want to see what IP addresses may have been scanning your system around the time of a compromise. To run psad in forensics mode, use the -A command-line switch as shown in bold in Listing 7-2 (some output has been abbreviated):
[iptablesfw]# psad -A [+] Entering analysis mode. Parsing /var/log/messages [+] Found 8804 iptables log messages out of 10000 total lines. [+] Processed 1600 packets... ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.