基于SPEA-Ⅱ算法的网络多层次安全访问控制方法

Multi-level Network Security Access Control Method Based on SPEA-ⅡAlgorithm

当前网络技术迅猛发展,网络安全问题日益突出,尤其是访问控制安全性;为了解决目前网络系统中存在的威胁检测精度和安全访问控制问题,引入SPEA-Ⅱ算法,提出一种新的网络多层次安全访问控制方法;深入分析网络多层次访问控制机制原理,明确安全访问控制目标;结合网络边界区域、传输信道区域及移动终端设备区域,建立边界访问控制目标函数、安全威胁检测目标函数、用户身份认证目标函数,提高网络系统安全威胁检测精度;利用SPEA-Ⅱ算法对联合目标函数进行求解,获取网络多层次安全访问控制机制最佳方案;通过迭代逐渐接近近似最优解集,建立最优安全策略组合,计算攻击流量因子完成网络多层次安全访问控制;实验结果表明,所提方法的网络多层次威胁检测精度为94%,安全评估为0.96;由此证明,所提方法的网络多层次安全访问控制效果较好,具有较强的安全性和适应性,能够为中移互联网领域的网络安全策略提供技术支持。

With the rapid development of current network technology,network security issues are increasingly prominent,especially access control security.In order to solve threat detection accuracy and security access control in current network systems,a new network multi-level security access control method is proposed by introducing the SPEA-II algorithm.This paper deeply analyzes the principle of network multi-level access control mechanism,clarifies the security access control objectives.Combined with the network boundary area,transmission channel area and mobile terminal equipment area,boundary access control objective function,security threat detection objective function and user identity authentication objective function,the security threat detection accuracy of the network system is improved.The SPEA-II algorithm is used to solve the joint objective function,and obtain the best scheme of network multi-level security access control mechanism.The approximate optimal solution set is gradually approached by the iteration,the optimal security policy combination is established,and the attack traffic factor is calculated to complete the multi-level security access control of the network.Experimental results show that the detection accuracy of the proposed method is 94%and the security assessment is 0.96.This proves that the proposed method has good multi-level network security access control effect,it has strong security and adaptability,and can provide technical support for network security strategy in the field of China mobile internet.