VOIP gateway apparatus, method, communication system, and program

The VoIP gateway device addresses DoS attacks by analyzing RTP packet payloads for peak frequencies and levels, discarding unauthorized packets, and notifying maintenance, effectively mitigating call quality issues and system crashes.

JP2026001385AActive Publication Date: 2026-01-07NEC PLATFROMS LTD
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Patent Information

Application Number
JP2024098663
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2026-01-07
Estimated Expiration
2044-06-19

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Abstract

To minimize an influence on a call by discarding an illegal RTP packet when a DoS attack is received in a VoIP network.SOLUTION: The VoIP gateway apparatus includes a voice frequency analysis section for performing spectrum analysis of a payload included in an RTP packet received from the VoIP network to acquire a peak frequency and a level, an illegal voice data decision section for deciding that an RTP packet received by a DoS attack is an illegal RTP packet if the peak frequency and the level analyzed and outputted by the voice frequency analysis section are outside a predetermined frequency range and a predetermined level range set in advance by a user, and a packet processing section for discarding an RTP packet decided to be an illegal RTP packet by the illegal voice data decision section and outputting a notification that the illegal RTP packet has been processed to a maintenance terminal.SELECTED DRAWING: Figure 3
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Citation Information

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