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Substation monitoring network debugging method based on security strategy management and control

A substation monitoring and security strategy technology, applied in the direction of electrical components, transmission systems, etc., can solve problems such as the unpredictability of substation monitoring network, achieve the effect of improving isolation and security, and avoiding the threat of network security

Active Publication Date: 2018-04-20
南京捷安信息科技有限公司
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Problems solved by technology

If there are viruses or illegal programs on the externally connected devices, direct access to the substation monitoring network will cause unpredictable consequences

Method used

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  • Substation monitoring network debugging method based on security strategy management and control

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Embodiment Construction

[0019] combine figure 1 , the present invention provides a substation monitoring network debugging method based on security policy control, comprising the following steps:

[0020] Step 1. According to the MAC address of the input debugging message, filter the non-local debugging message; discard the debugging message whose source MAC address or destination MAC address is the MAC address of the local network port, so as to avoid processing the communication with the local machine messages, so as to debug the machine while debugging the network.

[0021] Step 2. If the debug message type is IP, then go to step 3; otherwise, discard the debug message;

[0022] Step 3, if the protocol type in the IP header of the debugging message is TCP / UDP, then enter step 4; otherwise, discard the debugging message;

[0023] Step 4, if there is a security debugging state, the legality of the debugging message is checked; if it is passed, then the debugging message is forwarded; if it is not ...

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Abstract

The invention relates to a substation monitoring network debugging method based on security strategy management and control. The substation monitoring network debugging method comprises the followingsteps: step 1, filtering according to MAC addresses of input debugging messages to obtain non-native debugging messages; step 2, filtering according to debugging message types to obtain IP debugging messages; step 3, filtering according to protocol types in headers of the IP debugging messages to obtain TCP / UDP debugging messages; step 4, if a security debugging state exists, performing legality detection on the debugging messages, forwarding the debugging messages if the debugging messages pass through the legality detection, and entering a step 5 if the debugging messages do not pass throughthe legality detection; step 5, performing the legality detection on the debugging messages according to a security debugging strategy, adding the security debugging state and entering a step 6 if the debugging messages pass through the legality detection, or otherwise abandoning the debugging messages; and step 6, performing dynamic debugging protocol detection on the debugging messages. According to the method, compared with the existing debugging method through which a substation network is directly accessed, the debugging security is improved.

Description

technical field [0001] The invention relates to the field of substation monitoring, in particular to a method for debugging a substation monitoring network based on security policy management and control. Background technique [0002] For a long time, the debugging method of substation monitoring network has been to directly connect the laptops of various manufacturers to the switches in the substation for device configuration and debugging. With the frequent occurrence of various power grid security accidents at home and abroad, the monitoring network security of substations has been highly valued by the State Grid. Since the monitoring network of the substation is a local area network, it is particularly important to manage and control the equipment connected from the outside. If there are viruses or illegal programs on the externally connected devices, direct access to the substation monitoring network will cause unpredictable consequences. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0236H04L63/12H04L63/30H04L67/025H04L67/12
Inventor 叶婷
Owner 南京捷安信息科技有限公司
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