A REPORT ON VIRTUAL PRIVATE NETWORK

A
REPORT ON
VIRTUAL PRIVATE
NETWORK

Table of Contents
1. Introduction....................................................................................
.............................4-5
2. Authentication.................................................................................
............................5-9
3. Confidentiality and Integrity
process..........................................................................10-13
4. Protection against Replay
attacks..............................................................................14
5. Conclusion.......................................................................................
.............................14
6. References....................................................................................
.................................15

Table of figures
1. Figure
1...................................................................................................
........................7
2. Figure
2...................................................................................................
........................8
3. Figure
3...................................................................................................
........................9
4. Figure
4...................................................................................................
........................11
5. Figure
5...................................................................................................
........................12
6. Figure
6...................................................................................................
........................13

Introduction
Virtual Private Network generally known as VPN is a secure way of connecting a
private network through a public gateway. In other words, it is a kind of tunnel
which goes through public network to a remote network. Virtual private network
is the innovation that can be used from a remote network safely, so the
correspondence information is shielded from sniffing or capturing by hackers.
VPN connection can be established between two VPN networks via a secured
gateway with the ability to encode the information, protect data integrity and
guarantee the correspondence just occur between those two verified networks.
The VPN is somewhat connected to the past remote network called public
switched telephone network. VPN networks are associated with IP based
communication. Before VPN came into existence big ventures invested lots of
resources and time in building intricate private networks, these private networks
are called intranets. It was costly to install the private networks. Some
companies, who could not afford leased lines, used low speed network services.
As the Internet turned out to be increasingly open and transfer speed limits