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A method fro realizing stable secure protection of broadband access device

A technology for access equipment and security protection, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve problems such as long lease time of IP addresses, affecting users' normal Internet access, and failure of user IP address messages to pass through the equipment. Achieve the effect of ensuring normal Internet access and improving stability

Inactive Publication Date: 2008-03-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the lease time of the IP address allocated by the DHCP server is very long, so during this period of time, the user's legal IP address packets will not pass through the device, thus affecting the user's normal Internet access.

Method used

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  • A method fro realizing stable secure protection of broadband access device
  • A method fro realizing stable secure protection of broadband access device
  • A method fro realizing stable secure protection of broadband access device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0033] The design principle of the present invention: by enabling the DHCP Snooping (DHCP snooping) function and the IP Source guard (IP security protection) function in the broadband access device, when the DHCP ACK message sent by the DHCP server (DHCP server) is intercepted, the binding In the corresponding entry in the database, record the legal IP lease time given by the server, then modify the IP address lease time in the DHCP ACK message to set the time value for the user of the broadband access device, and send the DHCP ACK message to DHCP client (DHCP client).

[0034] Among them, the user-set time value of the IP address of the broadband access device can be modified by the user through the network management, and the IP address lease time set by the user can be set to a shorter time value to shorten the IP address on the ...

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PUM

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Abstract

The invention discloses a method of realizing safety protection stability of broadband access equipment, which is applied to data communication field and includes the following steps: start interception function of the broadband access equipment and acquire DHCP downstream message sent by a server; after acquiring the DHCP downstream message, the broadband access equipment modifies legal IP address hiring time in the DHCP downstream message into a time value set by users and sends the modified DHCP downstream message to a client end; after receiving the DHCP downstream message, the client end sends DHCP renewal request message for the legal IP address renewal to the server regularly. The invention changes the frequency at the client end sending DHCP request of the IP address renewal and guarantees users normal Internet surfing at the client end, by shortening the IP hire time in the DHCP downstream message.

Description

technical field [0001] The invention relates to the field of security protection of broadband access equipment, in particular to a method for realizing the stability of security protection of broadband access equipment. Background technique [0002] The existing DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) is a common broadband access authentication protocol, which is established on the client-server (client-server) model. In the initial stage of authentication, the client user host (DHCP client) initiates a DHCP request and sends a DHCP DISCOVER message to discover an authentication server (DHCP server) in the network. The DHCP server in the network responds and sends a DHCP OFFER message. DHCPclient may receive OFFERs from multiple servers, select a server, and send a DHCPREQUEST message. If the DHCP server can allocate an IP, it will send the configuration parameters to the user host by sending a DHCP ACK message; if it cannot be alloc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/911
Inventor 熊文杰邢思远王硕
Owner ZTE CORP
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