VoIP-SIP Security RTP packet injection

The aim of this attack is to disrupt an ongoing conversation. The attacker must first listen to an RTP stream, and then fashion RTP packets with a similar header, but a greater sequence number and timestamp, leading to these packets being accepted as the correct transmission. This will lead to the disruption of the communication.
The attacker must me able to listen to the network and extract RTP packets for their sequence numbers and timestamps. He must then be able to sent forged RTP packets to one or both of the participants.
Read More: http://www.vadese.org/files/upload/Best_practices_VoIP_en_v20.pdf

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