The Security Analysis and Attacks Detection of OSPF Routing Protocol

摘要

The widespread use of the Internet proposes great challenges for information security. Routing protocols are used to distribute network topology information among routers. Routers find the best route according to the topology information, and realize the network data forwarding. Without correct router information, the network packet transmission is inefficient or incorrect, which may even cause network paralyzed. Therefore, secure routing protocol is an import factor to ensure network security. This paper emphasizes the security of OSPF routing protocol. We firstly outline the background of OSPF technology, and present the OSPF security analysis, including authentication mechanism, reliable flooding mechanism and hierarchical routing mechanism. Then the vulnerabilities of OSPF and protecting methods are introduced. In addition, we propose the attacks detection system of OSPF routing protocol from the perspective of the OSPF security, in order to detect attacks without affecting the network operation. Lastly, future research on OSPF routing protocol are concluded.