Due to the dynamic feature of the internet security , we can solve the daily security issues of application system involving the professional and persistent security services to improve the information security status and reduce the security risks, and as a result to be an important tool to improve the security level of the network system.

The Design and Implementation of E-government Network Security System for Weifang Binhai Economic Development Area;

A management model of distributed network security system with tree-like hierarchical structure was introduced.

This paper expounds the working mechanism of worm,and designs a network security system of the library based on the features of the controllable worm, and points out that the system can automatically patch up the holes and clean up worms.