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A kind of wireless network bridge and the method for realizing dhcp security

A technology of wireless network bridge and DHCP message, applied in the field of wireless network, can solve the problems of not recognizing 4-address message, not supporting wireless client, not supporting wireless network bridge, etc.

Active Publication Date: 2015-12-02
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, currently commonly used AP devices do not support being used as wireless bridges, that is, they do not recognize 4-address packets
Commonly used AP devices only support simple Station direct access (that is, wireless Client direct access, and does not support wireless Client and then hang devices)

Method used

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  • A kind of wireless network bridge and the method for realizing dhcp security
  • A kind of wireless network bridge and the method for realizing dhcp security
  • A kind of wireless network bridge and the method for realizing dhcp security

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Embodiment Construction

[0025] In the networking of this patent, the wireless bridge device replaces the source MAC address of the Ethernet header in the DHCP message of the client, uses the unused new option to fill in the radioMAC of the wireless bridge, and after the DHCP server assigns the address, the added The ARP MAC is the radioMAC of the wireless bridge carried in optionA, not the real MAC of the client.

[0026] The present application provides a wireless network bridge, which is applied in a wireless network including a DHCP server, and the wireless network bridge is connected to a wireless access point AP through a wireless network, such as Figure 5 As shown, the wireless bridge includes a processing module, a conversion module and a recording module: the processing module is used to receive the DHCP message sent by the client, set the broadcast flag in the DHCP message, and set the broadcast flag in the DHCP message Add the radioMAC address of oneself in the authentication MAC of descri...

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PUM

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Abstract

The invention provides a wireless bridge and a DHCP (dynamic host configuration protocol) safety implementing method. The wireless bridge receives a DHCP message sent by a client side, a self MAC (media access control) address of the wireless bridge is added into the DHCP message to serve as an authentication MAC address of the client side, and after an IP (internet protocol) address is assigned to the client side, the wireless bridge records the IP+MAC binding relationship of the client side according to the received message of the client side and forwards the received message to a corresponding client side according to the binding relationship so that network safety is realized.

Description

technical field [0001] This application relates to wireless network technology, in particular to a method for implementing DHCP security in a wireless network. Background technique [0002] DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) adopts the "client / server" communication mode, the client submits a configuration request to the server, and the server returns configuration information such as the IP address assigned to the client to realize the dynamic configuration of network resources. [0003] After the DHCP client successfully applies for the IP address and other network configurations, the DHCPServer records the time lease for the resources applied for by each client. When the lease time expires, the DHCP client sends a DHCP-REQUEST message to the DHCP Server to renew. If the renewal is successful, the DHCP client can continue to use these network resources. If the renewal fails or the DHCP client does not renew the lease when the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L12/741H04W88/16H04L45/74
Inventor 许豫飞
Owner NEW H3C TECH CO LTD
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