May 2009
Intermediate to advanced
882 pages
22h 55m
English
Content preview from Cisco® Network Professional's: Advanced Internetworking Guide
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12.2. VPN Operation
Now you know about the components of IPsec and types of VPNs, so let's jump into how it all works. First, I discuss generic operation and then get more specifically into how it works in the Cisco environment.
Obviously, you've read about a lot of different technology, but in order to make this a little more palatable, I can generically describe IPsec in just a few tasks. So let's summarize what those tasks involve. Assuming you have an existing configuration:
An IPsec process is started when traffic that is defined as interesting matches an existing policy.
The interesting traffic is usually defined in terms of a source IP host or network and a destination IP host or network. This begins the IKE process.
IKE Phase 1 is initiated. ...
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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.