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A method and proxy device for traversing isolation devices in an IP monitoring system

A technology for monitoring systems and isolation equipment, applied in transmission systems, electrical components, etc., can solve problems such as hidden dangers of enterprise intranet security, and achieve the effect of avoiding processing burdens

Active Publication Date: 2015-09-09
ZHEJIANG UNIVIEW TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings security risks to the enterprise intranet

Method used

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  • A method and proxy device for traversing isolation devices in an IP monitoring system
  • A method and proxy device for traversing isolation devices in an IP monitoring system
  • A method and proxy device for traversing isolation devices in an IP monitoring system

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0021] figure 1 An IP surveillance system is shown. The IP monitoring system includes three branch networks, which are connected by an intermediate public network. The branch network C where the video management server VM is located is the public network, and the branch network A (192.168.x.x, figure 1 Area A) and branch network B (10.x.x.x, figure 1 Central area B) are all private networks. The monitoring system includes network isolation equipment (such as NAT, firewall, gatekeeper, etc.), EC, VC, VM and other servers (such as IP storage server IPSAN, media exchange server MS, data management server DM, etc.). In the monitoring system of the present invention, EC, VC and various servers are called monitoring nodes. in figure 1 , The EC and VC in the branch network A are located inside the network isolation device of its own network, that is, the ...

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Abstract

The invention provides a method for traversing isolating equipment in an IP monitoring system and proxy of the method. The method is applied to a monitoring system, the monitoring system comprises multiple monitoring nodes and an LNS. The method comprises the steps of establishing an L2TP tunnel junction with the LNS, obtaining an internal IP address of the tunnel from the LNS; receiving an IP message which is outwards transmitted by the monitoring node from a branch network; modifying the source IP address of the IP message into the internal IP address of the tunnel, and recording the corresponding relation between the monitoring node identifier carried by the message and the IP address of the monitoring node; transmitting the modified IP message to the outside by the tunnel; extracting the received tunnel message to obtain the internal IP message of the tunnel; modifying the target address of the internal IP message of the tunnel into the IP address of the monitoring node based on the monitoring node identifier and the corresponding relation, and then forwarding to the monitoring node. With the method and the proxy, effective assistance is provided to the branch network so as to be accessed by other monitoring nodes from the outside network in presence of the isolating equipment.

Description

Technical field [0001] The present invention relates to the field of video monitoring, in particular to an agent method and agent equipment for internal and external network communication in an IP monitoring system. Background technique [0002] Video surveillance based on IP networks has gradually developed into a mainstream solution in the security industry and has been successfully applied to large-scale projects such as safety projects, highways, public security networks, and parks. The standardization and openness of IP also make it easy to integrate various network islands and make network scale expansion easy. Taking into account the shortage of IPv4 address resources and the overlap of existing network address segments in various regions, as well as various network security needs, isolation devices such as NAT, firewalls, and security isolation gatekeepers have been widely used in large-scale networks. This makes the signaling and business processes of the IP-based video...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08
Inventor 周迪王连朝
Owner ZHEJIANG UNIVIEW TECH CO LTD
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