Abstract:

Security problem of Web software is more and more serious because of Web structure in its application. This paper analyzed common problems of Web system from the point of view of security. It established security defense mechanism towards Web platform authentication, authorization, encryption and management,carried out real-time monitoring through feature matching and block retrieval technology, providing technique protection for information filtering. Concretely,the method of designing the Web firewall by using the slice retrieval technique and the use of the Simhash algorithm to obtain the message feature to improve the network defense capability were adopted. Through the design and analysis of the Web firewall, danger of infringement can be prevented effectively and finally proved rationality and operability of security structure designed in this paper.

Key words: Web security, feature matching, monitoring and defense