O'Reilly logo

Practical BGP by Sangli Srihari, Russ White, Danny McPherson

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

What Is a Virtual Private Network?

The term virtual private network (VPN) is widely used; in fact, it's so widely used, it means different things to different people. Let's look at the three words involved:

  • Virtual indicates the network topology isn't tied to a physical topology but rather a logical topology which is defined through a physical network. The network equipment used for forwarding traffic along a virtual network isn't owned or operated by the end user but rather by some service provider.

  • Private indicates that the security, addressing, and routing of the network (or logical topology) are completely independent of the network security, addressing, and routing of other networks running across the same physical topology.

  • A network is ...

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