Design and implementation of System and Wide Area Network Security

Abstract

The root causes of information system security are that our information should be protected against unauthorized disclosure for legal and competitive reasons. All the information must be protected against accidental or illegal modification and must be available on time. Network security is the most important part of information security because it is responsible for securing all information passed via the network, and it is required to provide an acceptable level of protection for hardware and software. Poor security practices allow damage to our systems; we may be subject to criminal or civil legal proceeding. While good security can finally be seen as part of the market development strategy-consumers have expressed their concern over privacy and safety of data; Companies with strong security can furnish their investment to increase the pool of willing buyers and to increase their market share. In this paper we are describing how to protect our network and WAN network.

Key Words: Internet, TCP/IP, Security, Network Design, LAN, WAN, Encryption, VPN, IPSec.