Abstract: With the development of Internet, search engine has been widely applied. Now the application of search engine in the inline network is also gradually increasing. Inline network has the characteristics of separation of access, so it is necessary to realize security access in search process, and role permissions also conform to the security level of information searched. This paper proposes a kind of search strategy to realize security based on index filter, this strategy can ensure the accuracy and security of information search.

Key words: search engine, inline network, access control, index filter