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Protecting Deregistration Attack in SIP Using Delayed Deregistration
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 Title & Authors
Protecting Deregistration Attack in SIP Using Delayed Deregistration
Kwon, Kyung-Hee;
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This paper proposes a new protection technique against deregistration attack in SIP. Although it is caused by simple spoofing the REGISTER message of a legitimate SIP UA, its impact is serious. This new protection technique identifies and protects the deregistration attack by removing a binding form the location server after delaying a certain period of time instead of removing the binding immediately after receiving deregistration message. Therefore, this technique makes it possible to establish a secure SIP environment defending the deregistraion attack without any additional overhead such as an encryption or authentication.
SIP;Deregistration Attack;Impersonation Attack;Delayed Deregistration;
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