电信网中合法信令产生的用户线DoS攻击分析

Analysis of Subscriber Line DoS Attacks from Abusing Legitimate Signaling in Telecommunication Networks

随着电信网与互联网的互通,电信网络潜在的安全漏洞不断增加,利用电信网安全机制的缺陷使用合法信令发动攻击成为一种可能。通过分析电信网业务的典型呼叫流程,给出可能的利用恶意信令对电信网络用户发起的用户线DoS攻击模式及攻击效果,提出了一种通过截获信令以分析呼叫状态的防御措施。

With the interconnection between Telecommunication Network and Internet,many secrity vulnerabilities have been brought into Telecommunication Network.,of which the network safety measure is not effetive enough.This paper analyzes the pattern and effect of the DoS attacks which use legal signalings and aim at subscriber line of telecommunications network.A safty measure that detects this kind of attacks by intercepting the signalings is also described.