Network Security-Firewalls
Abstract:
The Internet is a marvelous technology advantage that provides access to information in revolutionary ways & in a timeless manner. Its explosive growth also causes major danger that provides the ability to pollute & destroy information in even more revolutionary ways. Everyone is jumping on the Internet bandwagon today. So this leads to various attacks by the unauthorized users. In an organization, the use of some resources or data may be restricted to a few people. People who are unauthorized to use these resources can gain access to them by using the passwords of other people.Over the past few years, the organizations central intelligence agencies, U.S. department of justice & NASA have had their web sites hacked. The hackers are using very sophisticated tools for gaining unauthorized access to computer system. Therefore it is important to secure a network.
Network security is the effort to create a secure computing platform, designed so that users cannot actions that they are not allowed to perform but can perform the actions that they are allowed to.
One of the popular techniques to secure the network is implementing firewalls. A firewall provides not only real security but also often plays an important role as a security blanket for management. A firewall can also acts as a corporate ambassador to the Internet. Thus a firewall acts as a safety alarm in this scenario. You can use a firewall to protect your home network and family from offensive Web sites and potential hackers.
In this paper, the way of obtaining a secured network and thereby integrating the freedom and privacy by employing a proper security organization which prevents the unauthorized access caused by several intruders such as viruses, worms, Trojan horses or hackers etc,. is discussed. This paper also presents the types of attacks and the counter measures to be taken for those attacks.
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