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Table item information processing method and device

An information processing method and a technology of a communication device are applied in the field of processing dynamic host configuration protocol monitoring table entry information, and can solve problems such as the inability to effectively ensure the security of a ring network network.

Pending Publication Date: 2022-01-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some ring network scenarios, even if the DHCP snooping function is deployed on network devices, the network security of the ring network cannot be effectively guaranteed.

Method used

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  • Table item information processing method and device
  • Table item information processing method and device
  • Table item information processing method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081] Example 1: In figure 1 In the shown scenario, when the user equipment 101 goes online, the user equipment 101 communicates with the DHCP server 102 through a path 1, and the path 1 includes a communication device SW2 and a communication device SW1. Both port 1 of SW2 and port 4 of SW1 enable DHCP snooping, then after user equipment 101 goes online, SW2 and SW1 can store the corresponding DHCP snooping entry of user equipment 101 respectively, so the message sent by legitimate user equipment 101 can Verified by SW2 and SW1. Therefore, both the communication device SW2 and the communication device SW1 can use the DHCP snooping entry corresponding to the aforementioned user equipment 101 to verify the message to be forwarded, thereby effectively preventing network hackers from counterfeiting the user equipment 101 (for example, counterfeiting the IP address of the user equipment 101). address) to the DHCP server 102 to send a message to the DHCP server 102 for network att...

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PUM

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Abstract

The invention provides a method for processing DHCP snooping table item information in a ring network. The method is executed by a first communication device on the ring network. In one example, a first communication device may acquire DHCP snooping entry information and synchronize the DHCP snooping entry information to a ring network or to other one or more nodes in communication with the ring network. The DHCP snooping table item information comprises a first internet protocol IP address of the first user equipment and a first MAC address of the first user equipment, wherein the first user equipment accesses the looped network through the first communication device. According to the scheme, after the message transmission path is changed, the node on the new path can perform DHCP snooping according to the obtained DHCP snooping table item information, so that network attacks can be effectively prevented while a legal user can access a network.

Description

[0001] This application claims the priority of the Chinese patent application with the application number CN202010726603.5 and the title of the invention "a communication method and device" submitted to the State Intellectual Property Office of China on July 25, 2020, the entire contents of which are incorporated by reference in In this application. technical field [0002] The present application relates to the communication field, and in particular to a method and device for processing snooping entry information of a Dynamic Host Configuration Protocol (DHCP). Background technique [0003] A DHCP server (server) can dynamically allocate an Internet Protocol (Internet Protocol, IP) address to a DHCP client (client). However, when the DHCP server assigns IP addresses to DHCP clients, there may be security risks. For example, there are man-in-the-middle attacks, IP spoofing (spoofing) attacks, media access control (media access control, MAC) spoofing attacks, lease renewal p...

Claims

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Application Information

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IPC IPC(8): H04L61/5014H04L12/46H04L45/586H04L45/247H04L9/40
CPCH04L12/4641H04L45/586H04L45/22H04L45/54H04L63/0236H04L12/42H04L45/66H04L45/16H04L63/162H04L63/164H04L63/1466H04L45/28H04L61/5014H04L12/4625
Inventor 朱筠张耀坤陈亮
Owner HUAWEI TECH CO LTD
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