May 2001
Intermediate to advanced
528 pages
12h 59m
English
Content preview from Cisco® Secure Internet Security SolutionsBecome 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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TCP Intercept
TCP Intercept tracks, intercepts, and validates TCP connection requests. This shields the local host from being contacted directly by a nontrusted network or host. Therefore, any DoS attacks attempted on the host are actually carried out against the router, which will be prepared to survive such attacks. TCP Intercept uses fast switching, except on the RS/RP/SSP-based Cisco 7000 series, which only uses process switching.
TCP Intercept operates in one of two modes, monitor mode and intercept mode. Monitor mode allows connections directly to the local host while monitoring the status of these connections. The router, because of the number of open connections or timeout limitations, drops existing and partially opened connections as ...
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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.