Using IPsec protocol to build secure VPN

Using IPsec protocol to build secure VPN

Introduction

The paper mainy deals with the use of IPsec protocol to build secure VPN". It would will provide a methodology to test the validity of communication tunnels in an IP network that have been set up using IP security protocols. The following Questions would be specifically answered by the paper: What are the key items that must be addressed in integration?· How would one evaluate that the integration is correct?· What is the approach to the validation of the correctness of the integration?· What are the tools to be used?

Deployment of IPSec

In order to resolve the issues related to technology, one need to identify the solutions before moving on to the practical step. After going through the identification process and determining the ideal solution to the problem is IPsec, generally the professionals and experts move on to find some designs and procedures that assure the fulfillment of needs. The procedure, described in the simplest terms, is comprised of the following four steps:

Architecture

Authentication

Cryptography and

Packet Filter

The following paragraphs highlight the details of all the four essential steps mentioned above:

Architecture: it involves the designing of architecture, mainly of the IPsec implementation and seeks to include the host placement (mainly meant for the host-to-host architecture) as well as gateway placement (meant for the host-to- gateway and gateway - to- host architecture). In addition, there is separate section for the IPsec client software, intended for host-to-host and the host-to- gateway architectures. The specific management consideration for the management of space, which can be described as host- to- host and host- to- gateway architectures, are also included in the same category.

Authentication: authentication implies that the implementation of IPsec must have the method of authentication selected beforehand, and the possible methods that can be used in this regard include pre-shared key or the digital signature.

Cryptography: cryptography is a complex process, which is mainly intended to increase the security processes and system, and implies that the encryption meant for algorithms as well as the protection of integrity must be selected by the professional beforehand. It is eminent to mention here that the above mentioned clauses are meant to increase the key strengths for algorithms and in addition, it also provides support to the multi key lengths of the algorithms.

Packet Filter: the packet filter acts as a gatekeeper and assist in determining the flow and the type of traffic that should be allowed. This implies that packet fillers not only assist in determining the safe traffic but also ensure which type of the protections and compressive measures should be applied for proper control and management of each type of traffic. It is eminent to mention here that the increase in amount of uncontrolled traffic also creates a number of issues, and packet filter acts to prevent all those issues by controlling the amount and types of traffic.

Remote Office to Main Office Connection

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