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Method for preventing campus network from virus attacks

A technology of campus network and ARP table, applied in the direction of electrical components, transmission system, data exchange through path configuration, etc., to achieve the effect of low cost and high efficiency

Inactive Publication Date: 2011-01-19
SUZHOU CHIEN SHIUNG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is to establish a fake gateway, and let the host deceived by it send data to the fake gateway instead of going online through a normal router, resulting in intra-network intercommunication, but not being able to access the Internet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] The network backbone equipment of a certain college mainly uses Ruijie routing switches and 50 other switches. Gigabit single-mode optical fiber is used to access the campus network. Optical fiber reaches all the buildings of the college and connects more than 2,000 computers. In order to effectively prevent ARP attacks, according to the actual situation of the college network, the following methods are used to prevent ARP virus intrusion.

[0022] (a) Vlans are divided into departments and departments. Use the principle of ARP attack to minimize the ARP attack to an acceptable range. The method is to try the trunk connection between the core switch, the aggregation layer switch and the two-layer access switch to ensure that each switch can use any Vlan; In Vlan; departments with fewer terminals divide Vlan by floor or building. There are many terminals in the student dormitory, so multiple VLANs are divided.

[0023] (b) Use the accounting and authentication syste...

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PUM

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Abstract

The invention discloses a method for preventing a campus network from virus attacks, which comprises the following steps: (a) dividing a campus network into a plurality of VLANs; (b) bonding user IP address with network card MAC address; (c) adopting a double safety bonding mode of bonding the IP address of the host computer of a user and the MAC address of a network card on a core switch and bonding the MAC address of the network of the computer of the user and a switch port on an edge switch; and (d) making active defense on the basis of the MIB state library of network equipment. In the invention, the attacked terminal can be locked effectively, the attach of ARP on the port is blocked, and the ARP spoofing attack is prevented effectively; and the time of network administrators is saved greatly, the safety of a tested network section is protected by the combination with prevention measurements, and the normal operation of the campus network is protected effectively.

Description

technical field [0001] The invention relates to a method for preventing virus intrusion, in particular to a method for preventing ARP virus intrusion in a campus network. Background technique [0002] In recent years, there have been frequent network interruptions in the campus network, the system is disconnected from the server instantly, cannot operate normally, and the client computer in the LAN becomes very slow to access the web page, which seriously affects the normal operation of the campus network. After testing, it is determined that the main cause of this phenomenon is the presence of ARP attack viruses in the LAN. This virus is a kind of exploiting the loophole of Address Resolution Protocol ARP (AddressResolution Protocol) to attack and cheat. Effective prevention of ARP network attacks has become a necessary condition to ensure the smooth flow of the campus network. [0003] ARP virus is a kind of deceptive Trojan horse virus, which mainly occurs inside the lo...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/28
Inventor 汪小霞
Owner SUZHOU CHIEN SHIUNG INST OF TECH
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