May 2001
Intermediate to advanced
528 pages
12h 59m
English
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How Context-Based Access Control (CBAC) Works
Context-based Access Control (CBAC) was designed for use with multiple port protocols that are unable to be processed with reflexive access lists. Since standard and extended access lists work at the network (Layer 3) or transport (Layer 4) layers of the OSI model, their ability to work with some applications is limited. CBAC loosens these limitations by filtering packets based on the application (Layer 7) layer of the OSI model. Version 11.2 of the firewall feature set IOS includes CBAC for 1600 and 2500 series routers. IOS Version 12.0 expands the covered routers to include 1700, 2600, and 3600 series routers.
The major additional features enabled through the use of CBAC are as follows:
Application-layer ...
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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.
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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.