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Monitoring method and monitoring device for access of terminal to local area network (LAN)

A terminal access and monitoring device technology, applied in security devices, wireless communications, electrical components, etc., can solve the problem of not guaranteeing the legitimacy of user terminals, improve reliability and security, prevent illegal terminal access, The effect of preventing illegal operations

Inactive Publication Date: 2011-03-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 802.1x authentication mechanism ensures the correctness of the user's personal information, but cannot guarantee the legitimacy of the user terminal

Method used

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  • Monitoring method and monitoring device for access of terminal to local area network (LAN)
  • Monitoring method and monitoring device for access of terminal to local area network (LAN)
  • Monitoring method and monitoring device for access of terminal to local area network (LAN)

Examples

Experimental program
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Embodiment Construction

[0048] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] see figure 1 , an embodiment of a method for monitoring a terminal accessing a local area network of the present invention is proposed, including: step S101, the data link layer judges whether there is an access port for receiving an ARP message and the ARP message in the preset MAC address entry The first corresponding relationship of the source MAC address of the text; step S102, when the first corresponding relationship exists in the preset MAC address entry, then send an ARP message to the network layer;

[0050] Step S103, the network layer judges whether there is a second corresponding relationship between the source MAC address, the access port, and the IP address corresponding to the source MAC in the preset DHCP binding entry;

[0051] Step S104, when the second corresponding relationship exists in the ...

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Abstract

The invention discloses a monitoring method and monitoring device for access of a terminal to a local area network (LAN). The monitoring method comprises the following steps: a data link layer (DLL) judges whether a first congruent relationship between an access port for receiving an address resolution protocol (ARP) message and a source media access control (MAC) address of the ARP message exists in a preset MAC address table; if yes, the ARP message is sent to a network layer; the network layer judges whether a second congruent relationship among the source MAC address, the access port and an IP address corresponding to the source MAC exists in a preset dynamic host configuration protocol (DHCP) bonding table; and if yes, the terminal sending the ARP message is allowed to access to the LAN. The monitoring method and monitoring device for the access of the terminal to the LAN provided by the invention can effectively prevent accesses of illegal terminals and illegal operation of accessing terminals, and improve the reliability and safety of the LAN.

Description

technical field [0001] The invention relates to network communication security technology, in particular to a monitoring method and a monitoring device for terminal access to a local area network. Background technique [0002] The local area network can realize resource sharing, but at the same time of realizing resource sharing, it also enhances the speed of virus transmission inside the local area network and increases the way of virus transmission. Therefore, timely and effectively monitoring the legality of user terminal access (such as personal PC, etc.) has become one of the important tasks of access switching equipment. [0003] In the local area network, especially in government enterprises, the absolute security of the network environment must be guaranteed. In order to ensure the security of the network environment, at present, the MAC of each terminal is registered, and the IP static allocation is planned to prevent cross-connection of personnel, and the correspo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/08H04W12/06H04W12/71
Inventor 盛威
Owner ZTE CORP
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