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Method and system for detecting false attack sources

An attack source, fake technology, applied in the field of Internet security, it can solve the problems of unable to obtain domain name query results, unable to pass authentication, inconvenient program implementation, etc.

Active Publication Date: 2013-11-13
SHENZHEN TENCENT COMP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This method in the prior art is to forcibly convert requests based on the UDP protocol to requests based on the TCP protocol. However, the current network environment of most of the existing caching domain name servers does not support queries based on the TCP protocol, resulting in its Unable to pass the authentication, unable to get the query result of the domain name, which affects the user experience
On the other hand, applying this method in the prior art requires that the protected authoritative domain name server must support queries based on the TCP protocol, and some protected authoritative domain name servers that do not support queries based on the TCP protocol need to be upgraded before implementation. Inconvenience to the implementation of the plan

Method used

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  • Method and system for detecting false attack sources

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Embodiment Construction

[0021] The solution of the present invention will be described in detail below in combination with the preferred embodiments thereof.

[0022] figure 2 A schematic flowchart of an embodiment of a method for detecting a false attack source of the present invention is shown in . In this embodiment, the further operation and processing process after determining that the two cookie values ​​are the same is used as an example for illustration. Those skilled in the art can know that, in the case of only needing to identify and determine whether it is a false attack source , it is only necessary to determine the cookie value twice, therefore, the description in the following embodiment is not intended to limit the solution of the present invention.

[0023] Such as figure 2 As shown, the method in this embodiment includes steps:

[0024] Step S201: Intercept and receive the first domain name query request information sent to the protected authoritative domain name server, the fi...

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Abstract

The invention provides a method and system for detecting false attack sources. The method includes the steps that first domain name query request information sent by a cache domain name server to an authoritative domain name server is intercepted and received; a first cookie value is determined according to the source IP address and the destination IP address of the first domain name query request information, and virtual domain name information of the authoritative domain name server is generated according to the first cookie value and then sent back to the cache domain name server; second domain name query request information sent by the cache domain name server to the authoritative domain name server is intercepted and received; a second cookie value is determined according to the source IP address and the destination IP address of the second domain name query request information, and the second cookie value is compared with the first cookie value carried by the second domain name query request information. According to the method and system for detecting false attack sources, the false attack sources can be accurately recognized, the authoritative domain name server can be effectively protected from attack by false IP sources and can normally work, and normal domain name query requests can not be affected.

Description

technical field [0001] The invention relates to the technical field of Internet security, in particular to a method for detecting false attack sources and a system for detecting false attack sources. Background technique [0002] DNS (Domain Name System, domain name service system) is an important infrastructure of the Internet, which completes the mapping function from domain names to IP addresses. Among them, the authoritative domain name server refers to the domain name server that provides authoritative name resolution. At present, a common attack method against DNS servers is false source flooding attack. False source flooding attack means that fake IP addresses initiate a large number of domain name query requests to DNS servers, making the load far exceed the capacity of DNS servers, resulting in The DNS server cannot provide services normally, affecting network availability. In the prior art, when detecting the false attack source of the authoritative domain name se...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 白惊涛罗喜军
Owner SHENZHEN TENCENT COMP SYST CO LTD
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