Research On Security OSPF Protocol Based On Behavior Trust

As the important interior gateway protocol, the security of the OSPF protocol influences the entire autonomous system. Currently, the research on the OSPF protocol is mainly about security reinforcement on the identity for the credibility of the router, which can guarantee the credibility of the identity of the router, but can not t guarantee the router behavior according to the expectations of the users.Based on the analysis of the credibility behavior of the router, this thesis ensures the behavior of the router safe and reliable by introducing the trust computing theory and trust theory. This thesis researches on the security of the current OSPF protocol deeply, analyzes the advantage and disadvantage of the existing methods in solving the security of the OSPF protocol; With introducing the trust computing theory into the OSPF protocol, the safe TC-OSPF router algorithm based on the trust computing technology is proposed, which provides the behavior credible of the router under the premise of integrity of the router platform; With introducing the trust theory into the OSPF protocol, the model of credible information collection monitoring and the model of adjacent trust evaluation are designed in this paper, based on which, the OSPF router algorithm based on adjacent trust entropy is proposed, this algorithm enable the OSPF protocol chose the route with the highest reliability by evaluating the security mechanisms and the historical behavior of the router nodes.This thesis analyzes the security and performance of the models and algorithm by simulation. Simulation results show that this thesis improves the security of OSPF protocol and contains the malicious attacks in the network effectively by introducing the trust computing theory and trust theory into the OSPF protocol, which ensures the behavior credibility of the router successfully.