O'Reilly logo

Network Security, Firewalls, and VPNs by J. Michael Stewart

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 14. Real-World VPNs

VIRTUAL PRIVATE NETWORKS (VPN) are a key technology and component in today's computer security environment. Recall that the Internet is open to virtually any user, while an intranet is open only to individuals within your organization. A third kind of network is the extranet. Extranets lie somewhere between the Internet and an intranet.

Companies use extranets to connect with suppliers and customers, two constituencies that are essential to business processes. Extranets usually use VPN technology to ensure confidentiality and integrity of information. VPNs are becoming an increasingly important component of any successful business's information technology plan. VPNs can substantially enhance the technological architecture ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required