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Method and device for limiting broadcast of ARP request

An ARP request and broadcast technology, applied in the field of communication, can solve problems such as hacker attacks, and achieve the effect of preventing hacker attacks

Inactive Publication Date: 2012-02-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are various viruses and hacker attacks in the network

Method used

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  • Method and device for limiting broadcast of ARP request
  • Method and device for limiting broadcast of ARP request
  • Method and device for limiting broadcast of ARP request

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The method and device of the present invention realize ARP broadcast restriction on the basis of the technology of dynamically assigning IP addresses, and directly send the ARP request to the host computer of the destination IP without broadcasting in the VLAN domain.

[0031] Such as figure 2 Shown, the present invention realizes the method for ARP broadcast restriction and comprises the following steps:

[0032] Step 201, the network device monitors the dynamic IP address allocation session, and creates and maintains a mapping table between the IP address and the bridge port according to the relevant message of the dynamic IP address allocation and the bridge port information entered by the dynamic IP address allocation request message;

[0033] Step 202, the network device extracts the ARP request, queries the mapping table according to the destination IP address in the ARP request and obtains the corresponding bridge port;

[0034] Step 203, the network device uni...

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Abstract

The invention provides a method and a device for limiting broadcast of an ARP. The method comprises the following steps that: (a) network equipment establishes and maintains a mapping table of IP addresses and bridge ports according to information of the bridge ports which a dynamic IP address distribution related message and a dynamic IP address distribution request message enter, wherein the mapping table of the IP addresses to the bridge ports comprises a plurality of mapping table records; (b) the network equipment extracts an ARP request, and inquires the mapping table according to a target IP address in the ARP request and obtains the corresponding bridge port; and (c) the network equipment unicasts the ARP request to the bridge port. The method and the device can realize the unicast of the ARP request and effectively prevent hacker attacks.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method and a device for broadcast restriction of an address resolution protocol (ARP). Background technique [0002] With the rapid development of broadband access technology and broadband services, network security is getting more and more attention. But there are various viruses and hacker attacks in the network at present. IP address spoofing is one of the most common means of hacking. For example, the hacker A pretends to be the IP of the host B and actively requests communication from the host C. Hacker A can also pretend to be host B and passively respond to host C's communication request. In the network communication technology based on TCP / IP (Transmission Control Protocol and Internet Protocol), the main purpose of ARP is to realize address resolution, that is, to obtain the corresponding relationship between IP address and MAC (Media Access Contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06
CPCH04L61/2015H04L61/103H04L29/12028H04L29/12226H04L63/1466H04L61/5014
Inventor 倪沈柳
Owner ZTE CORP