Suppression of malicious SIP messages using the resource priority header
US8424086B2 · kind B2 · utility
4Cited by
1References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 21, 2009 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/1104
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Internet Service Provider (ISP) node is configured to suppress malicious session initiation protocol (SIP) messages. The ISP node is coupled to receive a new session initiation protocol (SIP) message from a user agent client associated with the ISP. If the SIP message includes a resource priority header (RPH) indicating the new SIP message should be given priority within the network, the ISP node determines whether the user agent client previously sent an initial SIP message with an RPH that has not yet been authorized, and if so, places the new SIP message in a buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.