This paper analyzes the importance of network vulnerabilities scanner in the field of network security and its principles of implementation. The strong points of free network vulnerabilities scanner Nessus outgoing other products are presented. Also,the design and implementation of Web-based network vulnerabilities scan system based-on Nessus are given.
The paper mostly discusses the development of vulnerabilities databases in home and overseas. It designs a vulnerabilities database as a result of research of vulnerabilities category theory and need of vulnerabilities scan system. And a vulnerabilities detection technology based on rough set theory is advanced.
Using hole scanning technology we can detect the latent security hole in the network system and make the network administrators know the places of the security holes in advance, then guarantee the security of system.
Network security is a dynamic system engineering, and the single security products is not enough for the building of network security, the three-dimensional security system including anti-virus, firewall, network intrusion detection system, hole scanning and other security products has been recognized by industries and users.