关键词: 网络安全, 工业控制网络, LonWorks

Abstract: Paper designs a secure authentication system for LonWorks control network. A Nonce method using time server based hardware,can be used for identifying the time server information, to overcome the traditional control network to identify "long messages" inefficiencies, can deal with the "replay attack" adapt to industrial control network bandwidth is limited and real-time features. The experiments prove that this method is simple and effective, and reliable performance.