[ "刘丹军(1994-),男,湖北潜江人,国防科技大学硕士生,主要研究方向为网络安全、二进制安全。" ]
[ "蔡桂林(1982-),女,湖北浠水人,博士,主要研究方向为网络安全、移动目标防御。" ]
[ "王宝生(1970-),男,河北黄骅人,博士,国防科技大学研究员,主要研究方向为网络与信息安全。" ]
网络首发:2018-01,
纸质出版:2018-01-15
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刘丹军, 蔡桂林, 王宝生. AMTD:一种适应性移动目标防御方法[J]. 网络与信息安全学报, 2018,4(1):15-25.
Danjun LIU, Guilin CAI, Baosheng WANG. AMTD:a way of adaptive moving target defense[J]. Chinese Journal of Network and Information Security, 2018, 4(1): 15-25.
刘丹军, 蔡桂林, 王宝生. AMTD:一种适应性移动目标防御方法[J]. 网络与信息安全学报, 2018,4(1):15-25. DOI: 10.11959/j.issn.2096-109x.2018008.
Danjun LIU, Guilin CAI, Baosheng WANG. AMTD:a way of adaptive moving target defense[J]. Chinese Journal of Network and Information Security, 2018, 4(1): 15-25. DOI: 10.11959/j.issn.2096-109x.2018008.
MTD是通过动态移动目标的攻击面来改变攻击和防御不对称状态的一种新方式。MTD变换频率对于系统可用性、安全性和防御成本之间的权衡至关重要。但目前的变换频率通常根据管理者的经验确定,缺乏理论基础,无法达到可用性-安全性成本之间的权衡。为应对这一挑战,提出了适应性移动目标防御框架(AMTD),在确保系统可用的前提下,以最低的成本获取最大的系统安全性。AMTD的适应性体现在2 方面:一是防御模式的适应性,通过提出一种自适应转换策略,提供由安全警报触发的反应性防御和定时器到期事件触发的主动防御;二是变换频率的适应性,通过建立数学模型获得最优的变换频率。采取4个系列的模拟实验验证该解决方案的有效性。
Moving target defense is a new way to change the asymmetry state between attack and defense
by dynamically moving target’s attacking surface.Frequency conversion of MTD is of great importance for the weighing between usability
security and defense cost.Nowadays
however
frequency conversion is usually determined by manager’s experience
which cannot create a balance between usability and security cost for the lack of theory basis.An adaptive moving target defense framework(AMTD)was proposed.AMTD can maximize system security at the lowest cost while ensuring that the system is available.The adaptability of AMTD has two modes.Firstly
the defense mode
it contains an adaptive conversion strategy to provide reacting defense triggered by security alerts and active defense triggered by timer expiration events.The other mode is the frequency conversion
which obtain the optimal conversion frequency by establishing mathematical models.Four series of simulation experiments were taken to verify the effectiveness of the solution.
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