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Tunnel server and client device

A tunnel server and tunnel technology, applied in the field of tunnel servers and client devices

Active Publication Date: 2013-04-10
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The UDP port number is often used when setting ACL rules, but for tunnel-encapsulated packets, the UDP port number is fixed at 1701 (such as figure 2 UDP header 1), ordinary switches cannot monitor the flow of ACL, so how to realize the flow control of the monitoring front-end equipment in the monitoring network with NAT is a problem that needs to be solved

Method used

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  • Tunnel server and client device
  • Tunnel server and client device
  • Tunnel server and client device

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Embodiment Construction

[0023] In view of the above-mentioned technical problems, the present invention provides a tunnel technology suitable for flow control. The following will be described in detail in conjunction with specific embodiments.

[0024] image 3 It is a logical structure diagram of a tunnel server. The tunnel server includes: a tunnel processing unit 31 , an access processing unit 32 , an entry processing unit 33 and a message processing unit 34 .

[0025] Figure 4 for peace image 3 A logical structure diagram of a tunnel client device working with the tunnel server, the client device is applied to the first monitoring node, and includes: a tunnel processing unit 41, an access request unit 42, an entry processing unit 43 and a message processing unit 44 .

[0026] The tunnel server can be integrated on a monitoring node, for example, a media switching server MS; it can also be integrated on a network device such as a router. The first monitoring node is generally a monitoring ...

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Abstract

The invention provides a tunnel server and a client device. The tunnel server processes a tunnel building request sent by a first monitor node, allocates a virtual internet protocol (IP) to the first monitor node, confirms an access request of a second monitor node sent by the first monitor node, locally builds a tunnel forwarding table item which corresponds to an access and comprises a real IP of the first monitor node, the virtual IP of the first monitor node, an IP of the second monitor node and an identification corresponding to the access, repeatedly packaging an IP head which is sent by the first monitor node and accesses a message of the second monitor node according to the tunnel forwarding table item corresponding to the access, and sending the packaged IP head to the second monitor node, wherein the packaged IP head comprises the first monitor node virtual IP serving as a source IP and the second monitor node IP serving as a purpose IP address. The tunnel server and the client device achieve flow control and network safety of front end equipment in a monitor network with network address translation (NAT).

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to a tunnel server and a client device applied to a video monitoring network. Background technique [0002] With the continuous development of standardized and easily expandable IP network technology, the video surveillance technology based on IP network has also been developed rapidly, and IP surveillance has become the mainstream of current surveillance. Generally, users will use NAT technology when designing IP monitoring network according to their own security requirements, such as deploying some equipment in the monitoring center, such as monitoring server and IPSAN equipment, on the NAT private network. The IP monitoring network with NAT can consider the tunneling technology when realizing intercommunication and interconnection. Some previous patent applications of the applicant have recorded the implementation scheme of this technology. However, when tunnel technology realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/741H04L45/74
Inventor 任俊峰周迪
Owner ZHEJIANG UNIVIEW TECH CO LTD
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