Web Proxy based Detection and Protection Mechanisms against Client Based HTTP Attacks

a server side protection from client based HTTP attacks on multilevel proxy. HTTP attacks are continuously sent the threat to the network applications. Attackers create a huge the whole sum of traffic and forces it to the network. This induces significant injury to the victim server. In a computer network client sent an HTTP request to the server for asking application resources through a proxy server. The proxy has protected and monitoring the applications against such HTTP attacks. But the client can access the server through different web proxies to getting application resource. For the reason that considering a proxy to server traffic, proxy have the client information and server knows only the information of proxy. An existing system, finding of attacks is based only the proxy server and client system behavior rather than the actual client user. In such cases, an innocent web proxy or a whole client system may block. So this case may affect the many innocent users on the client system. To avoid this problem, a user based approach is used for finding locality behaviors of the user's system with enhanced http protocol. Proposed a threshold based algorithm (TBAD) with encryption, decryption algorithms for revamp the suspicious request to normal request. This method can protect the quality of service to the legitimate users of client system.