System and method for blocking sip-based abnormal traffic

Abstract

Provided is a system for blocking session initiation protocol (SIP)-based abnormal traffic. The system includes: a policy database (DB) in which allowed traffic is stored according to transmission priority; an abnormal traffic response module which receives traffic from a first network and transmits only portions of the received traffic, which match the allowed traffic stored in the policy DB, to a second network in order of transmission priority; and an abnormal traffic detection module which analyzes the traffic received from the first network and provides an activation signal to the abnormal traffic response module when detecting that the received traffic is abnormal traffic, wherein the abnormal traffic response module transmits the portions of the received traffic, which match the allowed traffic stored in the policy DB, to the second network such that the sum of the portions transmitted to the second network does not exceed a maximum allowed traffic limit.

Dependencies are inferred from the claim text.