The Design And Implement Of Proxy Control System In Video Conference Based On Gap

Video conference system is currently one of the more widely used applications, through networking and communications equipment, making people in multiple locations can be face to face meetings. Research and Application of video conference system, the two most widely used signaling protocol SIP protocol and H323 respectively agreement, research and published by IETF and ITU-T. Its agreement covers many aspects of video conferencing setup and teardown, as well as security, QoS, expansion.During the video conference system and the corresponding video conference service is operating normally, the attacker easily using forged malformed packet, etc. on the video conferencing service attacks, hindering the normal development of video conferencing services.Security isolation gateway network as a blocking device that can keep the physical separation between different networks, as well as resistance to most of the known or unknown Trojans. It will be directly applied to video conferencing systems are still problems. Usually it does not make any modifications to the application layer data when you are not running any security isolation gateway proxy control system during the default data forwarding, but directly to the data packets from one network to another network ferry. For video conferencing signaling protocol, the protocol data packets usually contain information negotiated media channels. Because video clients and video conferencing servers often located in different networks, which will lead to video conferencing does not work properly. Secondly, because of security isolation gateway to forward data without packet inspection and filtering, so still does not solve the problem of video conferencing services likely to be abnormal packet attacks.This article is designed and implemented under the video conference system will enable agents to control security isolation gateway forwarding and control functions with video conferencing data, it is possible to keep the network between physical isolation in the premise of providing normal video conferencing services, ensure that the video conference running business functions. Meanwhile, the protocol packet is inspected and filtered to provide a malformed packet detection, abnormal call blocking, blocking and other illegal business security check to prevent the video conference system from abnormal packet attacks.