Hyunwook Cha, Jea-Tek Ryu, B. Roh, JeongWook Kim, Hyuncheol Jeong
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引用次数: 5
Abstract
SIP is an application-level signaling protocol that manages a mutual multimedia communication session. Presently, SIP is widely used with Internet messaging, games and with VoIP (voice over IP) due to advantages such as its simplicity, flexibility and variety of protocols. However, SIP is associated with many types of security issues and requires a countermeasure device against call-disturbance attacks that can cause a great amount of inconvenience to users. Therefore, this study analyses SIP De- registration and call-disruption attacks and proposes a means of detecting these attacks. Attack detection is accomplished through a comparison of the messages last sent by the user and those that are considered to be an attack based on a Retransmission mechanism. When a message is detected as an attack, the user is informed and a re-authentication process is performed.
SIP是一种用于管理相互多媒体通信会话的应用层信令协议。目前,SIP由于其简单、灵活、协议多样等优点被广泛应用于互联网消息传递、游戏和VoIP (voice over IP)中。然而,SIP与许多类型的安全问题相关联,并且需要对抗呼叫干扰攻击的对抗设备,这可能给用户带来大量不便。因此,本研究分析了SIP注销攻击和呼叫中断攻击,并提出了检测这些攻击的方法。攻击检测是通过比较用户最后发送的消息和那些基于重传机制被认为是攻击的消息来完成的。当检测到消息为攻击时,会通知用户并执行重新身份验证过程。