International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Denial of Service (Dos) attacks aims to reduce scarce resources by generating illegitimate requests from one or many hosts. It made damage to the system. To avoid this, the authors propose a new concept Adaptive Selective Verification (ASV) to avoid DoS attack, which is a distributed adaptive mechanism for thwarting attacker's efforts to deny service to legitimate clients based on selective verification. They have to limit the network path for various users. For that set adaptive bandwidth limit with server state whose size remains small and constant regardless of the actions.