December 1998
Intermediate to advanced
228 pages
6h 36m
English
Content preview from Virtual Private Networks, Second EditionBecome 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,
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.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.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.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.
VPN Protocols
Coming from different directions and supporting different products and services, several security protocols have been in development over the last few years. We will start with one that has firmed up only recently, but will probably become nearly universal—the IPSec standard.
IPSec
Over the years as vendor after vendor labored over reinventing wheels, trying to hide IP packets in a secure protocol, people began to wonder why the TCP/IP protocol itself wasn’t updated to support authentication and encryption. That way, the network itself is secure and everything built upon it must also be secure. IPSec is the answer to this question.
The Internet Security Protocol (IPSec) is a generic structure initiated and maintained by a working group of the Internet Engineering Task Force (IETF) to provide various security services for the Internet Protocol (IP), for both IPv4 (the current standard) and IPv6 (the upcoming one). IPSec presents design goals for a top-level component-oriented structure, rather than detailing specific encryption algorithms or key-exchange methodologies.
Conceptually, IPSec was created to secure the network itself, presenting no real changes to the applications that run above it. Since the TCP/IP protocol is so ubiquitous, it is a natural evolution to produce a secure network system developed almost in parallel to the existing system. Upgrading to IPSec products and services will only enhance security, as current network-oriented applications can still be ...
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.