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URL filtering method and device

A filtering method and filtering device technology, applied in the field of network communication, can solve problems such as user sensitivity, poor friendliness, hijacking and complex analysis of HTTPS data, and achieve the effect of ensuring security and improving experience

Active Publication Date: 2016-06-29
BEIJINGNETENTSEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the HTTPS type URL filtering method provided by the related technology has the following problems: method 1 needs to parse the HTTPS protocol data, which is more complicated and consumes the performance of the URL filtering device; in addition, the blocking URL prompt page cannot be provided, and the friendliness is poor
Method 2: There are many DNS packets, and it is difficult to maintain the correspondence table between domain names and IP addresses; one IP address may correspond to multiple domain names, and the URL filtering results are inaccurate; when users visit websites, they may directly access them without going through DNS (such as modifying Hosts file), resulting in the inability to establish a correspondence table between domain names and IP addresses, and unable to perform URL filtering
Method 3: Deployment requires certain conditions, and not all HTTPS requests can be successfully hijacked, and URL filtering may not be possible; most browsers can detect that HTTPS data has been hijacked, and trigger an alarm, making users sensitive; hijacking and analysis HTTPS data is complex, which consumes the performance of URL filtering equipment

Method used

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Examples

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Embodiment Construction

[0037] In the embodiment of the present invention, the URL filtering device judges whether the status code in the Hypertext Transfer Protocol HTTP response message belongs to the redirection status code; when the status code belongs to the redirection status code, the URL filtering device judges whether the URL in the HTTP response message is Matches the default URL and blocks the URL if it matches the default URL.

[0038] It should be noted that in practical applications, when accessing a website, the URL entered by the user into the browser address box is usually incomplete, such as usually not having a protocol type; The URL entered is usually 163.com, not http: / / www.163.com / . However, in the absence of such a protocol type, the user's personal computer (PersonalComputer, PC) usually uses redirection technology to complete the visit to the website. Specifically, the user's PC sends an HTTP request according to the incomplete URL entered by the user, that is, the original ...

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PUM

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Abstract

The invention discloses a uniform resource locator (URL) filtering method. The URL filtering method comprises the steps: judging whether a status code of hypertext transfer protocol (HTTP) response information belongs to a redirection status code; if the status code belongs to the redirection status code, judging whether a URL of the HTTP response information matches a preset URL; and if the URL matches the preset URL, blocking the URL. The invention further discloses a URL filtering device.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for filtering web addresses. Background technique [0002] In recent years, the Internet has developed rapidly, and various businesses are increasingly dependent on the Internet, resulting in the emergence of many websites, including illegal websites such as phishing, pornography, and gambling. In order to ensure the security of users surfing the Internet, it is necessary to filter the URLs of websites. URLs usually include Hypertext Transfer Protocol (Hypertext Transfer Protocol, HTTP) type URLs and Secure Hypertext Transfer Protocol (Secure Hypertext Transfer Protocol, HTTPS) type URLs, and the HTTPS type provided by related technologies URL filtering methods generally include three types: [0003] Method 1, the URL filtering device parses the HTTPS protocol, extracts the domain name of the HTTPS type URL from the ClientHello field (field in t...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/0236
Inventor 张磊刘岩曹政
Owner BEIJINGNETENTSEC
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