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Method for preventing ARP cheating

A technology of ARP spoofing and ARP messages, applied in the field of preventing ARP spoofing, can solve problems such as illegal control, data theft, rigidity, etc., and achieve the effect of overcoming ARP spoofing and ensuring stable operation

Inactive Publication Date: 2017-02-22
合肥红珊瑚软件服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3. Data tampering
4. Illegal control
[0006] The existing solution is to configure the network management address as a static address without dynamic update, but this solution is too rigid and does not facilitate network expansion, especially for large-scale networks.

Method used

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  • Method for preventing ARP cheating
  • Method for preventing ARP cheating

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Experimental program
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Embodiment Construction

[0034] The core of the invention is to provide a method for preventing ARP spoofing.

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only the present invention Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] The invention provides a method for preventing ARP spoofing, the method comprises the following steps:

[0037] Step S101, receiving the message, receiving the ARP message sent to the local machine from the network;

[0038] Step S102, verify the legitimacy of the message, v...

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PUM

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Abstract

The invention discloses a method for preventing ARP cheating. In the method, through verifying usage validity of a legitimate ARP message received by a network device and a creditability verification process, learned ARP entries are ensured to be static and credible. ARP dynamic and static mechanisms are combined so that a disadvantage that a traditional static mechanism is not convenient for network expansion is overcome and a disadvantage that ARP dynamic learning is easy to be cheated by ARP on traditional network equipment is overcome too, and stable and credible operation of a network is ensured.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a method for preventing ARP deception. Background technique [0002] ARP (Address Resolution Protocol) is an address resolution protocol, which is a protocol for converting an IP address into a physical address. There are two ways of mapping from IP addresses to physical addresses: tabular and non-tabular. Specifically, ARP is to resolve the address of the network layer (that is, the third layer of OSI) to the physical address of the data link layer (that is, the second layer of OSI). [0003] The working mechanism of the ARP protocol is that a certain machine A wants to send a message to the host B, it will query the local ARP cache table, and after finding the MAC address corresponding to the IP address of B, the data transmission will be carried out. If not found, then A broadcasts an ARP request message (carrying the IP address Ia of host A---physical address Pa),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
CPCH04L61/103H04L63/126H04L63/1491
Inventor 曹卫星
Owner 合肥红珊瑚软件服务有限公司