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Multicast security control method, system and transmission node

A transmission node, security control technology, applied in the field of communication, to achieve the effect of improving security, avoiding attacks, and ensuring security

Active Publication Date: 2011-12-28
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The embodiment of the present invention provides a multicast security control method, system and transmission node, which are used to solve the security problem of the upstream node of the multicast data stream existing in the prior art, and prevent the attack of the transmission node in the network by the illegal multicast source

Method used

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  • Multicast security control method, system and transmission node
  • Multicast security control method, system and transmission node
  • Multicast security control method, system and transmission node

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Embodiment Construction

[0032] The multicast security control system provided by the embodiment of the present invention may include: a multicast source, a transmission node, and a receiver. Among them, the multicast source is used to provide a multicast stream data message, which is sent to a transmission node connected to itself. The transmitting node is used to transmit the received multicast stream data message to the downstream node or the receiving end. The receiving end is used to receive the multicast stream data message sent by the transmission node.

[0033] Such as figure 1 As shown, it is an example of the structure of the multicast security control system. figure 1 The multicast sources shown in include: legal multicast source S1, illegal multicast sources S2 and S3, etc.; transmission nodes include: transmission nodes A, B, C, D, E, etc.; and receiving ends include: receiving ends R1 and R2 etc.

[0034] The multicast source is used to provide multicast stream data packets to the transmiss...

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PUM

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Abstract

The invention discloses a multicast security control method, system and transmission node. The method comprises: the transmission node receives a multicast flow data packet from an upstream port; Information, to find whether there is a pre-established matching upstream port entry containing the multicast address information and upstream port information; if it exists, forward the data according to the data forwarding table of the multicast group to which the data message belongs message; if it does not exist, it is judged whether the upstream port is a pre-configured legal upstream port, if so, a new upstream port entry is created according to the multicast address information and upstream port information, and a new upstream port entry is created according to the datagram The data forwarding table of the forwarding path corresponding to the multicast group to which the message belongs forwards the data message; if not, discards the data message. It effectively guarantees the security of the upstream node of the multicast flow, and avoids the attack of the illegal multicast source on the transmission node.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a multicast security control method, system and transmission node used for multicast data stream forwarding in a local area network. Background technique [0002] On the Internet, single-point sending and multi-point receiving multimedia services such as video conferencing and network TV are becoming an important part of information transmission. Multicast is to effectively solve the problem of single-point sending and multi-point receiving. When the sender sends data to a group of receivers, it only needs to send the data with a reserved group address. Only the receivers who join the multicast group can receive the multicast data, and other users on the network will not receive the multicast data. To the multicast data. In this way, the sender only needs to send data once, and it can be sent to all receivers, which greatly reduces the load on the network and the burd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/18H04L45/16
Inventor 倪宏
Owner RUIJIE NETWORKS CO LTD
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