Shulou(Shulou.com)06/01 Report--

Today, I will talk to you about the solution of the ntp network school time server in the security system, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

Security system generally includes: monitoring system, call system, office computer and other components. Among them, the monitoring system is the main component of security, and with the improvement of the development level of modern computer network, it has changed from the earliest analog system to digital system, which is more intelligent and centralized in modern industrial applications. it is conducive to supervision and configuration, currently in government agencies, road monitoring, electric power telecommunications, prison public security, military, shopping malls and hotels. Supermarkets, residential areas and other industries have become necessary equipment.

Ntp time server can provide it with highly accurate and unified accurate time information. This paper briefly discusses the application of ntp time server in monitoring system.

Computers in these networks, whether they are file servers, mail servers or Internet gateways, are quite accurate about time requirements. The reason why there is a need to synchronize all computers or servers in enterprises is that the computer is a quartz clock or a cheap oscillating circuit, with an error of about one second a day, and the cumulative error will become larger and larger with the passage of time.

With the increasing distributed computing and our increasing dependence on the network, inaccurate computer time will have a great impact on the network structure and the security of the system applications in it. especially those network instructions or applications that are sensitive to the lack of time synchronization.

The network monitoring system relies on its own functions to achieve the function of the system, but in the long-term use, due to the difference of firmware, there will be different time differences in the monitoring equipment of different nodes in the whole system, which will affect the accuracy of late inspection and accident investigation. At present, the network time protocols of domestic monitoring systems all take NTP as the time protocol benchmark. In order to meet the accurate and unified time in the use of long-term network monitoring systems, SYN2151 NTP time synchronization server can be selected.

The SYN2151 clock synchronizer receives GPS and Beidou satellite signals and has a built-in high-precision constant temperature crystal oscillator. When the satellite is received normally, the time standard is obtained from the satellite. Once the satellite loses lock, it relies on the built-in crystal oscillator clock source to keep time to ensure the accuracy of time. The device has heartbeat detection function, and two devices are designed in the system. When the two devices are used in the field, their IP can be set to the same ip. Once one of them fails due to some reason, the other can switch seamlessly. The redundant backup of two devices greatly improves the stability and security of the time service system.

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