User cooperation trust model and its application in network security management

In traditional network security management systems, system administrators could not prevent malicious users from illegal actions in time. In this paper, we first present a User Cooperation Trust Model (UCTM) which not only encourages the good behavior liberally, but also punishes those minatory behaviors decisively. Then based on UCTM we proposed and implemented the trust based P2P Network Security Management System (T2SMS) which dynamically evaluate user´s reputation correlated with the user´s privilege in the network. With T2SMS, a malicious user will be kicked out from the network system and refused from accessing resources of the network automatically when the user´s reputation is lower than some threshold.