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Securing SIP-based VoIP infrastructure against flooding attacks and Spam Over IP Telephony

机译:确保基于SIP的VoIP基础架构免受洪水攻击和IP电话上的垃圾邮件

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摘要

Security of session initiation protocol (SIP) servers is a serious concern of Voice over Internet (VoIP) vendors. The important contribution of our paper is an accurate and real-time attack classification system that detects: (1) application layer SIP flood attacks that result in denial of service (DoS) and distributed DoS attacks, and (2) Spam over Internet Telephony (SPIT). The major advantage of our framework over existing schemes is that it performs packet-based analysis using a set of spatial and temporal features. As a result, we do not need to transform network packet streams into traffic flows and thus save significant processing and memory overheads associated with the flow-based analysis. We evaluate our framework on a real-world SIP traffic-collected from the SIP server of a VoIP vendor-by injecting a number of application layer anomalies in it. The results of our experiments show that our proposed framework achieves significantly greater detection accuracy compared with existing state-of-the-art flooding and SPIT detection schemes.
机译:会话发起协议(SIP)服务器的安全性是Internet语音(VoIP)供应商的严重关注。本文的重要贡献是一种准确,实时的攻击分类系统,它可以检测:(1)导致拒绝服务(DoS)和分布式DoS攻击的应用层SIP Flood攻击,以及(2)Internet电话上的垃圾邮件(吐)。与现有方案相比,我们的框架的主要优势在于它使用一组空间和时间特征来执行基于数据包的分析。结果,我们不需要将网络数据包流转换为业务流,从而节省了与基于流的分析相关的大量处理和内存开销。我们通过从VoIP供应商的SIP服务器收集的真实SIP流量评估我们的框架,方法是在其中注入许多应用程序层异常。实验结果表明,与现有的最新泛洪和SPIT检测方案相比,我们提出的框架可实现更高的检测精度。

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