Application and Research of SOCKS Protocol Version 5 in Fire Wan

This paper discusses the newest fire-wall system implemented with SOCKS Protocol Version 5 based on client/server model, and its fundamental principle and the implementation protocol are illuminated. The packet format about request and reply betWeen the SOCKS Client and SOCKS Server is given, and its implemented-steps are shown.The distinction betWeen the SOCKS and Proxy are analyzed, Which shows the advantages of the system.