公开(公告)号：US20180351757A1

公开(公告)日：2018-12-06

申请号：US15615270

申请日：2017-06-06

Applicant: Cisco Technology, Inc.

Inventor： K Tirumaleswar Reddy ,  Ram Mohan Ravindranath ,  Kaustubh Inamdar ,  Gonzalo Salgueiro

IPC: H04L12/18 ,  H04L29/06

CPC classification number: H04L12/1822 ,  H04L12/1818 ,  H04L63/0457 ,  H04L63/062 ,  H04L63/166

Abstract: The disclosed technology addresses the need in the art for a detecting an unauthorized participant in a multiparty conferencing session. A system is configured to join a conferencing session, obtain a roster for the conferencing session via a Session Initiation Protocol (SIP) channel, and generate a roster hash value based on the roster. The system may further receive a reference hash value from a key management server and compare the reference hash value with the roster hash value. The system may determine that the roster is invalid when the reference hash value does not match the roster hash value.

公开(公告)号：US20150249668A1

公开(公告)日：2015-09-03

申请号：US14255701

申请日：2014-04-17

Applicant: CISCO TECHNOLOGY, INC.

Inventor： K. Tirumaleswar Reddy ,  Ram Mohan Ravindranath ,  Muthu Arul Mozhi Perumal ,  Daniel G. Wing ,  William C. VerSteeg

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L47/10 ,  H04L47/2441 ,  H04L47/70 ,  H04L63/0263 ,  H04L63/10 ,  H04L65/60 ,  H04L65/80 ,  H04L67/10

Abstract: Modern day user applications leverages new communication technologies such as WebRTC, WebEx, and Jabber allow devices to connect and exchange media content including audio streams, video streams, and data stream/channels. The present disclosure describes mechanisms for a Port Control Protocol (PCP) server to provide feedback to PCP clients to enforce certain policies on the transport of such media content for a network. A policy may include a traffic handling policy for enforcing differentiated quality of service characteristics for different types of media streams. Another policy may include a security policy ensuring a data files being transmitted over a data channel from one endpoint travels to a security application via a relay element before the packets reaches another endpoint. The mechanisms are transparent to the endpoints, and advantageously preserve the user experience for these user applications.