Research on key technologies for synchronization network security

doi:10.12267/j.issn.2096-5931.2024.03.013

Abstract

Abstract:

As one of the basic support networks of the communication network, the synchronization network plays an increasingly important role, and its security problems also become increasingly prominent. In this paper, the research background of synchronization network security is first introduced briefly, several types of cases are analyzed, and the key technologies related to synchronization network security are studied in order to solve the corresponding security problems. Then, the situation of synchronization network security standards is analyzed, and finally the prospect is proposed.

Key words: synchronization network, security, interference

CLC Number:

TN915.9

PAN Feng, HU Changjun, MIAO Xinyu, LI Shufang. Research on key technologies for synchronization network security[J]. Information and Communications Technology and Policy, 2024, 50(3): 83-89.

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URL:

http://ictp.caict.ac.cn/EN/10.12267/j.issn.2096-5931.2024.03.013

http://ictp.caict.ac.cn/EN/Y2024/V50/I3/83

Figures/Tables 3

References 11

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类型	主要特征	典型产生方式	威胁方式和影响特点
中断类安全问题	关闭授时基准源、中断授时服务	GPS卫星退服、卫星信号关闭、同步授时源头中断等	覆盖范围大,故障恢复周期长,对通信网络影响巨大
干扰类安全问题	干扰授时基准源、扰乱正常授时服务	GNSS干扰器攻击、PTP延时干扰、加PDV干扰等	局部区域干扰,发生概率高,风险相对较低
欺骗类安全问题	欺骗授时基准源、扰乱正常授时服务	GNSS欺骗PTP中的BMC算法欺骗等	无法及时感知,潜在影响难以预估

类型	主要特征	典型产生方式	威胁方式和影响特点
中断类安全问题	关闭授时基准源、中断授时服务	GPS卫星退服、卫星信号关闭、同步授时源头中断等	覆盖范围大,故障恢复周期长,对通信网络影响巨大
干扰类安全问题	干扰授时基准源、扰乱正常授时服务	GNSS干扰器攻击、PTP延时干扰、加PDV干扰等	局部区域干扰,发生概率高,风险相对较低
欺骗类安全问题	欺骗授时基准源、扰乱正常授时服务	GNSS欺骗PTP中的BMC算法欺骗等	无法及时感知,潜在影响难以预估

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