Abstract: Aiming at the security issues of the new style campus network, this paper proposes a multilevel and stereoscopic systems scheme of collaborative defense for campus network security. Based on the scheme, in combination with the latest distributed firewall and intrusion detection systems, actually built the corresponding coordinated defense model. After the integration of Agent technology, the communication protocol between the various security subsystems are respecification and redesign. Studies show that the model is feasible, and thereby the safety of the campus network is ensured to the maximum.

Key words: campus network, DFW, IDS, coordinated defense, Agent