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Vpn with Ipsec

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1. Abstract
The goal of VPNs is to provide a cost-effective and secure way to connect business to one another and remote workers to office networks. Network Security Protocols encompasses the basis for safe & reliable data transfer. These security devices should be able to provide accountability, access control, confidentiality, integrity, while all the time being cost effective. This provides us with different security protocols related to the transfer of data through a network. With a prevalent system of networks the frontier for world data communication, it is absolutely critical to be able to have these protocols provide the most secure service possible. In this report technical review IPSec protocol involved with Network Security. Internet Protocol Security (IPSec)

It is a suite of protocol for securing IP communications by authentication and encryption of each IP packet of a communication session. IPSec also includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiating cryptography keys which is to be used during the session. IPSec is an end to end security scheme operating in the Layer of Internet of the IP suite. It can be used in protecting data flows between a pair of hosts, between a pair of security gateways, or between a security gateway and a host.

2. Introduction to VPN
A VPN is a virtual private network, which is built on top of existing physical network that can provide a secure communication mechanism for data and other information transmitted between networks. Because VPN can be used over existing networks, such as the Internet, it can facilitate the secure transfer of sensitive data across public networks. This is often less expensive than alternatives such as dedicated private telecommunications lines between organizations or branch offices. VPNs can also provide flexible solutions, such as securing communications between remote telecommuters and the organization’s...