Orhan Ergun No Comments

Introduction to VPN (Virtual Private Network)

Introduction to VPN (Virtual Private Network)

Let’s start with the definition. VPN is a logical network and created over shared physical infrastructure.

Shared infrastructure can be private such as MPLS VPN of a Service Provider or over the Public infrastructure such as Internet.

There are many concepts to understand VPN in detail but in this article I will cover the definition, common design considerations, and some not well known concepts about it.

We can group VPNs into two categories. WAN and the Datacenter VPN Technologies.

WAN VPN Technologies

1.GRE

2.mGRE (Multipoint GRE)

3. IPSEC

4. DMVPN

5.GETVPN

6.L2TPV3

7.LISP

8. MPLS L3 VPN Read more