DNS攻击检测与安全防护研究综述

doi:10.11959/j.issn.1000-0801.2022248

Abstract

Abstract:

With the gradual evolution of the traditional Internet to “Internet+”, the domain name system (DNS) had been continuously expanding from basic address resolution to new models such as comprehensive perception and reliable transmission.Due to the diverse functions and the extensive coverage of DNS in the new scenario, it will cause serious consequences once attacked.Therefore, the research on DNS attack detection and security protection continues and attracts more and more attention.Firstly, several common DNS attacks were introduced, including DNS spoofing, DNS covert channel, DNS distributed denial of service (DDoS) attack, DNS reflection amplification attacks, and malicious DGA domain names.Subsequently, these DNS attack detection technologies were systematically analyzed and summarized from the machine learning perspective.Then, the DNS security protection technologies were sorted out in decentralization, authenticated encryption and limited resolution.Finally, some future research directions were proposed.

Key words: domain name system, DNS attack detection, security protection, machine learning

CLC Number:

TP393

Jianwu ZHANG, Yanjun AN, Huangyan DENG. A survey on DNS attack detection and security protection[J]. Telecommunications Science, 2022, 38(9): 1-17.

Figures/Tables 8

References 20

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攻击方式	攻击原理	攻击后果
DNS欺骗	修改DNS缓存或劫持DNS请求	网络钓鱼、信息窃取
DNS隐蔽信道	利用DNS数据包封装信息	发送恶意指令，窃取隐私信息
DNS DDoS攻击	直接耗尽服务器带宽资源	丧失网络服务能力，造成经济损失
DNS反射放大攻击	间接耗尽服务器带宽资源	丧失网络服务能力，造成经济损失
恶意DGA域名	使用DGA生成大量恶意域名	网络中存在大量恶意域名，破坏系统安全性能
漏洞攻击	利用缓存区溢出、访问权限等漏洞	破坏系统安全性能
域名渗透攻击	注册合法顶点域名的子域名	网络钓鱼、信息窃取
蠕虫攻击	基于各种木马病毒	传播计算机病毒、勒索病毒

特征		描述
载荷特征	DNS请求/响应的大小	隐蔽信道通常在请求和响应中放入尽可能多的数据导致长域名
	主机名的熵	隐蔽域名无意义表现为每个字符的均匀使用，具有较高的熵
	域名中数字字符所占百分比	合法域名很少使用数字，经过编码的域名会含有大量的数字
	最长有意义字符串百分比	合法域名通常具有一定含义，隐蔽信道域名随机性强、无意义
	域名中不同字符个数	域名中不同字符过多时通常存在隐蔽信道
	字符频率	合法域名是通用语言的体现，遵循齐普夫定律，字符会集中到高频字符
	连续的辅音字母	合法域名为了方便发音不会使用连续的辅音字母
	不常用资源记录类型	正常信道一般没有TXT记录，DNS隐蔽信道可能会存在大量的TXT记录
流量特征	每个IP地址的DNS流量总量	特定客户端IP地址由于轮询服务器产生大量流量
	每个域名的DNS流量总量	DNS隐蔽信道通过特定受控的域名传输数据，造成该域名流量较大
	DNS服务器的地理位置	大量的DNS流量流向无关未知区域，很可能是隐蔽信道造成的
	历史域名信息	隐蔽信道域名通常是最近生成的，造成最近添加的未知的NS/A记录
	孤独的DNS请求	DNS请求通常在另一个请求之前发出，例如通过HTTP的Web页面请求

机器学习类型	文献	所用算法	分类方式	依赖特征提取
传统机器学习	文献[23]	SVM	二分类	是
	文献[24]	Multi-SVM	多分类	是
	文献[25]	RF	二分类	是
	文献[26]	DT	二分类	是
	文献[27]	KNN、SVM、RF	二分类	是
深度学习	文献[28]	CNN	多分类	是
	文献[24]	MC-CNN	二分类	是
	文献[30]	Letnet-5	二分类	是
	文献[31]	BYTE-CNN	二分类	否
	文献[32]	LSTM	二分类	否

网络	优点	缺点
RNN	具有一定记忆能力，对序列特征学习具有一定优势	只有短期记忆能力，容易出现梯度消失、梯度爆炸现象，且对随机性低的域名产生较高的误报
LSTM	相比 RNN 具有长期学习能力，在文本学习和自然语言处理等领域被广泛应用	对随机性低的域名产生较高的误报
GAN	通过对生成对抗样本的训练，具有一定预测未来 DGA变体域名的能力	处理离散序列数据存在生成器难以传递梯度更新，判别器难以评估完整的序列数据的缺陷

学习方式	机器学习类型	文献	所用算法	分类方式	依赖特征提取	代价敏感
无监督学习		文献[50]	K-means	二分类	是	否
		文献[51]	K-means	二分类	是	否
监督学习	传统机器学习	文献[52]	RF	多分类	是	否
		文献[53]	RF	二分类	是	否
		文献[54]	DT RF	二分类	是	否
		文献[55]	DT	二分类	是	否
		文献[56]	SVM KNN	二分类	是	否
		文献[57]	SVM	多分类	是	否
	深度学习	文献[58]	LSTM	多分类	否	否
		文献[59]	LSTM	多分类	否	是
		文献[60]	LSTM	多分类	否	是
		文献[61]	RNN	二分类	否	否
		文献[62]	GAN	二分类	否	否

A survey on DNS attack detection and security protection

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