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Implementation method and equipment of keyword filtration

A keyword and gateway device technology, applied in the field of communication, can solve the problems of high complexity of security gateway equipment and the inability of security gateway equipment to filter keywords, and achieve the effect of improving processing performance

Inactive Publication Date: 2013-06-05
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the security gateway device, it is necessary to filter the plaintext data by keywords, but HTTP is transmitted in a compression method (for example, deflate compression), that is, the data returned by the Web server to the intranet user through the network is transmitted based on the compression method Yes, when the security gateway device receives the data, it needs to decompress the returned data, otherwise, the security gateway device will not be able to perform keyword filtering
That is, the security gateway device needs to perform keyword matching on the decompressed data to filter sensitive keywords. The processing complexity of the security gateway device is very high, which is a great challenge to the processing performance of the security gateway device

Method used

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  • Implementation method and equipment of keyword filtration
  • Implementation method and equipment of keyword filtration
  • Implementation method and equipment of keyword filtration

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Embodiment Construction

[0045] The core idea of ​​the present invention is to divide the request message from the terminal into the message that needs to modify the header field and the message that does not need to modify the header field by classifying the traffic filtered by keywords, so that the gateway device only needs to modify the header field. The response message corresponding to the message of the domain is filtered, the network traffic is effectively searched, and the processing performance of the keyword filtering of the gateway device is improved.

[0046]Further, the gateway device modifies the Accept-Encoding header field of the request message so that the server responds to the response message in plain text, so that the gateway device can perform keyword filtering without decompressing the traffic, and make the gateway device A unified decoding method can be used to decode the response message; the processing performance of the gateway device for keyword filtering is improved. Moreo...

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Abstract

The invention discloses an implementation method and an equipment of keyword filtration. The method includes the following steps: gateway equipment receives a data message and judges whether the data message is a data message from a terminal; when the judgment result is positive, the gateway equipment judges the type of the data message, when the type of the data message indicates a need of modifying header, the gateway equipment modifies the Accept-Encoding header in the data message into a response message that needs the response of a server in the form of plaintext and sends the modified data message to the server; and when the type of the data message indicates no need of modifying the header, the gateway equipment sends the data message to the server. In the invention, the processingperformance of the gateway equipment for conducting keyword filtration is improved.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for implementing keyword filtering. Background technique [0002] With the strengthening of information security, there are more and more demands for filtering the content of Web pages. Among them, currently the most widely used webpage content filtering application is keyword filtering for webpage content, and sensitive keywords (such as violence, pornography, etc.) are predefined by administrators. When the webpage returned to the terminal user) contains the predefined keyword, the content of the visit is prohibited or recorded. [0003] When intranet users need to access the network, they need to send data streams to the network through the security gateway device. The security gateway device receives the data stream and obtains the content of the data stream. If the content of the data stream contains predefined When the keyword is specifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06G06F17/30
Inventor 雷公武
Owner NEW H3C TECH CO LTD