DHCP safety communication method, device and system

A technology for secure communication and client devices, applied in the field of DHCP secure communication methods, devices, and systems, can solve problems such as illegal attacks and poor network system security, and achieve the effect of improving security and avoiding illegal attacks

Inactive Publication Date: 2010-09-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the client’s ID is provided by the client itself, attackers can easily intercept the client’s identity information, thereby forging the identity to launch illegal attacks on the server, resulting in poor security of the network system

Method used

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  • DHCP safety communication method, device and system
  • DHCP safety communication method, device and system
  • DHCP safety communication method, device and system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020] The embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings. Apparently, the embodiments described below are only some of the embodiments of the present invention, not all of them.

[0021] see figure 1 , figure 1 A DHCP secure communication method provided by an embodiment of the present invention. The method mainly includes the following steps.

[0022] Step 102, the server receives a first message sent by the client, where the first message includes an access challenge request, and the access challenge request is used to request the server to authenticate the client.

[0023] Step 104, the server side generates a server side message, and encrypts the server side message to obtain a server side ciphertext.

[0024] After receiving the access challenge request, the server generates server ciphertext to verify whether the client is reliable or trustworthy. In a specific application, the server-side mess...

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PUM

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Abstract

The embodiment of the invention provides a dynamic host configuration protocol (DHCP) safety communication method, which comprises the following steps that: a server receives a first message transmitted by a client, wherein the first message comprises an access challenge request for requesting the server to authenticate the client; the server generates a server message and encrypts the server message to obtain a server cipher text; the server transmits a first response to the client, wherein the first response comprises the server cipher text; the server receives a second message returned by the client, wherein the second message comprises the server message which is obtained by decrypting the server cipher text by the client; the server verifies whether the server message in the second message is consistent with the server message locally stored at the server; and if so, the server confirms that the client is trustable. In addition, the embodiment of the invention also provides a server device and a client device.

Description

technical field [0001] Embodiments of the present invention relate to the field of network technology, in particular to a DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) secure communication method, device and system. Background technique [0002] With the development of network technology, network equipment has been widely used. Since the topology of the network is easy to change, many network devices need to obtain IP addresses dynamically to access the network. In the current implementation scheme, many of these network devices support DHCP, and an external DHCP SERVER (server) assigns a dynamic IP address. However, DHCP itself does not consider any security measures, and there will be many security risks in practical applications, making DHCP SERVER vulnerable to illegal attacks. [0003] In an existing solution, when a network device (that is, a client) initiates a request to a DHCP server (that is, a server), it carries its own ID (ide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
Inventor 徐炜
Owner HUAWEI TECH CO LTD
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