网络加密流量识别研究综述及展望

摘要

鉴于加密流量识别技术的重要性和已有相关研究工作，首先根据流量分析需求的层次介绍了加密流量识别的类型，如协议、应用和服务。其次，概述已有加密流量识别技术，并从多个角度进行分析对比。最后，归纳现有加密流量识别研究存在的不足及影响当前加密流量识别的因素，如隧道技术、流量伪装技术、新型协议HTTP/2.0和QUIC等，并对加密流量识别趋势及未来研究方向进行展望。%Considering the importance of encrypted traffic identification technology and existing research work, first, the type of encrypted traffic identification according to the demand of traffic analysis were introduced, such as proto-cols, applications and services. Second, the encrypted traffic identification technology was summarized, and identifi-cation technology was compared from multiple views. Third, the deficiencies and the affecting factors of the existing encrypted traffic identification technologies were induced, such as tunneling, traffic camouflage technology, new pro-tocols of HTTP/2.0 and QUIC. Finally, prospect trends and directions of future research on encrypted traffic identifi-cation were discussed.