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Non-intrusive time synchronization method and system and storage medium

An intrusive, time-consuming technology that is used in the field of network communications to solve problems such as increasing equipment costs

Active Publication Date: 2021-06-22
四川英得赛克科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to check the time of the system in the network domain where the traffic monitoring device is located, a new time synchronization server can be deployed in the network domain, but this will require the user to adjust the network topology and purchase a new time synchronization server, which will increase the user's equipment. cost

Method used

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  • Non-intrusive time synchronization method and system and storage medium
  • Non-intrusive time synchronization method and system and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The non-intrusive time synchronization method of this embodiment is mainly used in applications such as figure 1 On the traffic monitoring device of the mirrored traffic shown; this embodiment takes the time synchronization protocol as the NTP protocol as an example, including the following steps:

[0041] Step 1, collect network packets from the mirror port of the switch, and filter out IP network packets containing time synchronization information from the collected network packets; wherein, because the working modes of the collection network ports of the traffic monitoring device are generally divided into promiscuous mode and Non-promiscuous mode, the network card in promiscuous mode can receive all the data packets passing through the network card, while the network card in non-promiscuous mode can only receive the data packets sent to the network card (the destination IP is the data packet of the network card) Therefore, in order to capture more comprehensive data...

Embodiment 2

[0058] like image 3 As shown, the present embodiment also provides a non-intrusive time synchronization system, including:

[0059] A network packet collection module, the network packet collection module is used to collect network packets from the mirror port of the switch, and filter out IP network messages containing time synchronization information from the collected network packets;

[0060] A network packet analysis module, the network packet analysis module is used to extract the timestamp field from the IP network message;

[0061] A time calculation module, the time calculation module is used to calculate the proofreading time based on the extracted timestamp field;

[0062] A time synchronization module, the time synchronization module is used to perform time calibration on the flow monitoring equipment by using the calculated calibration time.

[0063] The specific implementation process of the non-intrusive time synchronization system corresponds to the aforemen...

Embodiment 3

[0068] An embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the non-intrusive object detection as described in any one of the above technical solutions is realized. time method steps.

[0069] In the embodiment of the present invention, if the non-intrusive time synchronization function is realized in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal compu...

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Abstract

The invention provides a non-intrusive time synchronization method and system and a storage medium, and the method comprises the following steps: 1, collecting a network packet from a mirror port of a switch, and filtering and screening out an IP network message containing time synchronization information from the collected network packet; 2, extracting a timestamp field from the IP network message; 3, calculating proofreading time based on the extracted timestamp field; 4, checking the time of the flow monitoring equipment by using the calculated checking time. According to the non-intrusive time synchronization method and the non-intrusive time synchronization system provided by the invention, the time correction of the flow monitoring equipment can be realized under the conditions that the original complex network topology structure is not adjusted and new time synchronization service equipment is not installed.

Description

technical field [0001] The present invention relates to the technical field of network communication, and in particular, to a non-intrusive time synchronization method, system and storage medium. Background technique [0002] With the continuous development of network technology, the current network technology has played an increasingly important role in different industries or fields, such as the field of power dispatching and industrial control. There are common network security problems in these different application fields. Therefore, with the continuous development of network security technology, some security monitoring devices, especially network flow monitoring devices, have been gradually applied to power dispatching systems or industrial control systems. However, in the real environment, the network environment of the existing power dispatching system or industrial control system is very complex, and even some security requirements do not allow the installation of ...

Claims

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Application Information

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IPC IPC(8): H04J3/06
CPCH04J3/0667
Inventor 贾锦辉龚海澎王庭宇杨松彭涛
Owner 四川英得赛克科技有限公司
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