As worldwide systems extend the interconnection of universal information network, the smooth activity of communication and computing arrangements becomes vital. However, repeating attacks as virus and worm assaults and the achievement of criminal assailants delineate the shortcoming in current data advances and the need to give increased security in the network. Network security issue for the most part incorporates and organize network and information security. In particular, it alludes to the unwavering quality of system framework, classification, uprightness and accessibility of information data in the network. With this, the students are motivated in research, presents the system and network security advancements principally in detail, including verification, information encryption innovation, firewall innovation, interruption discovery framework , antivirus innovation and virtual private system. System security issue is identified with each system client, so the students must put a high incentive upon arranging security assaults and guarantee that the entire system is secured.