Virtual Private Network

VPN• In the most basic definition, VPN is a

connection which allows 2 computers or networks to communicate with each other across a public network.

• It is a very good way to secure connection problems.

The data is sent between the 2 computers or networks through a

virtual tunnel.

• The virtual tunnel is the key component of the VPN because it forms a private link among the computers and networks.

Virtual Tunnel• The point-to-point connection that

supports the encryption and the authentication of the data being transferred.

• Tunnel allows the data to pass through in a secure way.

How is the tunnel created ?

• encapsulation of data for transition

• forming a fake address

• conversion of the data to its original state

Advantages of VPN

• saves money/ no additional equipment is needed (phones etc.)

• it allows anyone with a good direct internet connection to reach their data.

• provides a extranet connecting clients and workers.

Types of VPN connections

• User to network

• Network to network

3 different protocols under VPN

• Point-to-point Tunneling Protocol (PPTP)

• Layer 2 Protocol (L2TP)

• Internet Protocol Security (IPSec)