动目标防御机制

摘要

动目标防御是安全领域的一个新探索，旨在通过动态变化增加攻击者的难度，从而提升系统的安全性。文章从对抗条件下实现安全的机理入手，分析了动目标防御的原理和有效性，建立了动目标防护技术体系，描述了不同层次和粒度的动目标防御机制，分析了实现动目标防御面临的问题和挑战。%Moving Target Defense (MTD) is a new research theme to cyber security, which takes away the adversary’s advantage by dynamical variance to increase the security of the system. In this paper, the security principle under the counter conditions is proposed and the model and validity of MTD are analyzed. The MTD technology architecture is introduced to describe various MTD mechanisms in different levels. At last, the challenges to realize MTD are described.