Abstract: Firewall is a useful tool for protecting network,and adjusting its parameters adaptively is important to network performance. At present,there are no available adjusting algorithms for firewall. The mechanism of endocrine system was analyzed, a kind of artificial endocrine system (AES) was designed, and an adaptive adjusting algorithm based on AES was constructed. Simulation tests show that the adj usting algorithm given in this paper has advantages of good performance, and applying prospect. The algorithm with modification can be used in intrusion detection system.

Key words: Endocrine system, Hormone, Firewall, Network performance, Adaptive adjusting algorithm