Abstract: A method of automating the ability of a network to distinguish between a traffic generated by automated means and the traffic generated by human beings for blocking automated traffic during a distributed denial of service attack is disclosed. The method includes placing at least one validated traffic manager (VTM) computer on a computer network by a user. The method further includes monitoring a plurality of network requests by storing a plurality of user traffic source (UTS) lists such as a white list, a grey list and a black list on the at least one VTM computer. The method utilizes a reverse turning test (RTT) that includes a human verification process (HVP) to distinguish between the traffic generated by human beings and the automated traffic.