November 2002
Intermediate to advanced
800 pages
19h 58m
English
Content preview from Network Security Principles and PracticesBecome 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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Using a Router, PIX, or IDSM as a Sensor
Both a router and a PIX Firewall can act as a sensor. However, these capabilities are somewhat limited as compared to the functionality of a standalone appliance sensor. The primary limitation in using a router or a PIX as a sensor is the number of signatures that each of them deploys in the software (59 and 57, respectively). Also, the sensor implementation on a router or a PIX cannot shun an attacker. The only attack response mechanism implemented apart from alarming is drop and reset. Another drawback in using the PIX or a router as a sensor device is throughput. The primary reason for the impact on throughput is the fact that the router and the PIX do inline intrusion detection, meaning that they inspect ...
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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.