Intelligent DNS message processing method and processing device

A message processing and message technology, applied in the field of intelligent gateways, can solve security risks, increase management and application complexity of ordinary enterprise users, and high deployment costs

Active Publication Date: 2011-02-09
HANGZHOU DPTECH TECH
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Problems solved by technology

[0006] For the above figure 1 and figure 2 For two typical actual networking applications, additional DNSALG configuration is required, and it is necessary to further distinguish the situation of the internal network or the public network; and once the IP address of the HTTPServer changes, it needs to be reconfigured on the gateway device. Increased the complexity of the mana

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  • Intelligent DNS message processing method and processing device
  • Intelligent DNS message processing method and processing device
  • Intelligent DNS message processing method and processing device

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Embodiment Construction

[0027] The invention focuses on the intelligent processing of the DNS response message by the gateway device, thereby reducing the user's configuration work, and will not be affected by the change of the HTTP server address configuration. In terms of a preferred embodiment, the present invention recommends the use of computer software as the implementation mechanism. Of course, the present invention does not exclude the combination of software and hardware and the realization of firmware. The following describes the general processing flow of the present invention through the preferred embodiment, and combines Some examples are illustrated.

[0028] Please refer to Figure 4In the logical structure diagram of the present invention, it is first necessary to introduce some normal configurations in the networking environment, and these configurations are the basis for completing normal internal and external business intercommunication. First configure a static mapping entry for ...

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Abstract

The invention provides an intelligent domain name system (DNS) service processing method and an intelligent DNS service processing device. The method comprises the following steps of: judging whether the connection to which a DNS response message belongs undergoes network address translation (NAT) processing or not; matching an I address of a HTTP Server in a message with a private network E address in a static mapping list item; if the matching is successful, modifying an HTTP Server address in the message according to a mapping relation and then forwarding the modified HTTP Server address; if the matching fails, entering a message forwarding process, namely matching the connection which does not undergo the NAT processing with a public network IP address in the static mapping list item; if the matching is successful, modifying the HTTP Server address according to the mapping relation and then forwarding the modified HTTP Server address; and if the matching fails, entering the massage forwarding process. By the method and the device, the configuration work of users is greatly simplified.

Description

technical field [0001] The invention relates to an intelligent gateway technology, in particular to a technology for processing intelligent DNS messages on a gateway device. Background technique [0002] For enterprise HTTP applications, the HTTP Server (Hypertext Transfer Protocol server) is usually placed in the intranet behind the gateway device with security functions. And the security mechanism of the security device effectively resists various network attacks, such as flood attacks based on the TCP protocol or various attacks based on the HTTP protocol, so as to achieve the purpose of protecting the HTTP Server. [0003] Because the IP address configured or assigned by the HTTP Server in the internal network is a private network IP address, internal users (Clients) can communicate with it, but it cannot directly communicate with external Clients. For this reason, it is usually necessary to enable the NAT function on the gateway device to convert the private network IP...

Claims

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Application Information

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IPC IPC(8): H04L12/66H04L29/08H04L29/12
Inventor 张家铭
Owner HANGZHOU DPTECH TECH
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