December 2005
Intermediate to advanced
1032 pages
29h 12m
English
Content preview from The Complete Cisco VPN Configuration Guide
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VPN Implementations
Throughout the chapter up to this point, I have repeatedly referred to “VPN implementations,” but haven’t defined what a VPN implementation actually is. First, let me discuss what a VPN is and what it can encompass. Specifically, the following sections will discuss these popular VPN implementation methods, including how they are implemented, and their basic advantages and disadvantages:
GRE
IPsec
PPTP
L2TP
MPLS
SSL
Other chapters in the book will expand on many of these VPN implementations, so the material you see in the following sections is a basic overview.
GRE
Generic Route Encapsulation (GRE) is a VPN technology originally developed by Cisco and later written up under two Internet Engineering Task Force (IETF) RFCs—1701 ...
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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.