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减少DNS流量以增强家庭物联网设备隐私

Marta Moure-Garrido¹, Carlos Garcia-Rubio¹, Celeste Campo¹

¹Department of Telematic Engineering, University Carlos III of Madrid, Av. de la Universidad 30, E-28911 Leganes, Spain.

Sensors (Basel, Switzerland)

|May 11, 2024

概括

物联网 (IoT) 设备产生独特的域名服务器 (DNS) 流量,揭示设备类型并增加网络攻击风险. 在物联网设备上实施DNS缓存可以显著减少这种流量,并增强用户隐私.

科学领域:

计算机科学计算机科学
网络安全网络安全
网络工程网络工程

背景情况:

物联网 (IoT) 设备在家庭中越来越普遍,从而造成潜在的网络安全漏洞.
尽管采取了安全措施,但由于固有的弱点,物联网设备可能成为网络攻击的目标.
域名服务器 (DNS) 流量是物联网设备的主要通信通道,通常以纯文本传输数据.

研究的目的:

在家庭环境中对物联网设备产生的DNS流量进行详细分析.
识别物联网DNS查询的独特特征,这些特征可能会被攻击者利用.
提出一种方法来减轻与物联网DNS流量相关的安全风险.

主要方法:

分析来自物联网 (IoT) 设备的域名服务器 (DNS) 流量模式.
检查查询域名,查询量和传输协议 (User Datagram Protocol/UDP端口53) 的情况.
评估纯文本DNS查询和过度流量生成的安全影响.

主要成果:

物联网DNS查询具有高度独特的域模式,可以轻松识别特定的设备类型.
观察到意外地大量的重复性DNS查询.
通过UDP端口53传输DNS查询的纯文本扩大了设备识别和有针对性的攻击的风险.

结论:

来自物联网设备的独特和大量DNS流量构成重大安全风险,使设备识别和有针对性的网络攻击更容易.
过度的DNS流量可以升级整个物联网生态系统的妥协.
在物联网设备上实施DNS缓存是减少流量,防止设备类型识别和增强用户隐私的可行措施.

关键词:

这是一个DNSDNSDNSDNSDNSDNSDNS.物联网隐私物联网隐私物联网隐私物联网网络流量网络流量

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