关键词: 代理服务器, 探测, HTTP代理, 认证

Abstract: The communication characteristics of proxy server were investigated from the angle of remote host computer. The functions and classifications of proxy server were summarized, and its working model was proposed, together with analysis of its logic modules and factors that influenced communication. After the principle of probing characteristics of proxy server was analyzed, a probing algorithm for HTTP proxy was designed, and a probing system prototype was implemented. The system accomplished penetrating through specific authentication mechanism in Windows domain environment. At last, the system was tested and its performance was analyzed. It is concluded that it is applicable to a certain extent.

Key words: proxy server, probe, HTTP proxy, authentication