September 2005
Intermediate to advanced
552 pages
14h 48m
English
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Chapter 10. Virtual Private Networks (VPN)
This chapter introduces the IPSec protocol and its role in providing VPN service. The focus is on implementing LAN-to-LAN VPNs using IPSec with preshared keys. The chapter also addresses interoperability issues between Cisco devices and other popular IPSec implementations.
The topics discussed in this chapter are as follows:
VPN Overview
A virtual private network (VPN) enables private networks to communicate securely over the unsecured public network (that is, the Internet). These connections behave as a single virtual network, despite being geographically separated. VPNs provide inexpensive alternatives to expensive leased lines–WANs. VPNs also ...
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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.