A method and device for enhancing network security

Abstract

The invention discloses a method for strengthening the network safety, including the following steps: when new wireless equipment is accessed to the network, the network side judges whether the authorization number of the new equipment is the same with the authorization number of the wireless equipment which has established the connections, if the number is the same, the access of the new equipment is refused; otherwise, the packet of the new equipment is waited to be received. At the same time, the invention also disclose a device for strengthening the network safety, the invention can verify whether the new equipment is the legitimate by judging whether the authorization number of the new equipment is the same with the authorization numbers of the other equipments which have been accessed when the new equipment is accessed to the network, the invention can prevent the illegal equipment from accessing to the network, further to strengthen the network safety.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a method and device for strengthening network security. Background technique [0002] Commonly used wireless devices such as industrial wireless networks are linked through wireless technology, and users can easily access any device in the industrial network through the wireless network. Please refer to Figure 1, which is a schematic diagram of the control system structure of the industrial wireless network As a block diagram, an industrial wireless network usually includes a monitoring layer network and an on-site control layer network, wherein the monitoring layer network usually includes an engineer station 101, an operator station 102, a monitoring station 103, and a wireless network security management server 104, wherein the wireless network The security management server 104 is used to maintain and manage the access security of devices in the entire industrial wir...

AI Technical Summary

Problems solved by technology

[0003] However, at present, because the monitoring layer network in the existing industrial wireless network usually has no effective security verification means for the wireless devices connected to the on-site control layer network, therefore, illegal users can access malicious devices through the wireless network, such as Intercept the data of a transmission, tamper with the sampling or control data, and send the tampered data to the actuator, thus causing the entire system of the monitoring layer network in the industrial wireless network to be in a dangerous situation

Or in the monitoring network of the industrial wireless network, a mobile PC (computer) or wireless handheld device 108 can be disguised as an engineer station 101 or operator station 102 to maliciously modify the configuration of devices in the field control layer network information, causing the control system to be in a state of confusion

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