As networks are growing broader and larger there needs to be a system to protect and secure the information on the net.
             Networks are formed to share information, communicate, share single hardware devices like printers, scanners, etc. Businesses and organizations exchange their work, information, with online payments systems. Internet offers all businesses, social, and commercial operations in a fast shortest possible time at very reduced cost. Network of worldwide users has changed the way businesses our done today. It has increased profitability and reduced time period in which businesses, commerce and trade goals are accomplished. This is due to the tremendous exposure of businesses on the net to with worldwide users. In this way to compete in today's market and to fully access growing advantages, organizations and companies need to implement network (intranet & internet) in their core technology.
             As with so many opportunities on the Internet one cannot deny great benefits it provides to its users. However, there are certain security risks, which are inherent to the Internet. But one cannot remain isolated or keep their business away from this big opportunity due to the threats on the networks. There is a need to secure networks to protect it from being in the hands of illegitimate users or even legitimate users who are not allowed to have access to private information. Network security will protect loss of any private, secret information exchanged between authorized users from unauthorized users. Information may include any type of data saved on hard disks of interconnected computers, on web servers, transmission over the Internet like email messaging, financial and business information.
             Security also implies protection of systems on which data is saved. This includes protecting computers, networking elements, services and applications.
             Protecting networks is important for keeping the information confidential, to ...