International Association of Computer Science & Information Technology (IACSIT)
As Cisco systems' routing and switching equipment occupy a large market share, so their security is critical for network. Firstly, this paper analyzes the security mechanisms of Cisco IOS, such as the integrity check mechanism, the memory protection mechanism, the authentication mechanism, the access control mechanism and so on. And then, research the vulnerability of these security mechanisms when resisting attack. At last, in order to better protect the security of Cisco IOS, some advices about how to strengthen the anti-attack capability of Cisco IOS are given.