Time Synchronization for Laser Markers

The network connection for the laser marking machines requires attention to network security, system stability, and permission control.The guide provides practical security advice from the perspectives of network operation, time synchronization, and firewall setup, to help users avoid the risk of data leakage and equipment failure.

Why is it so important to keep time synchronized?

Time synchronization seems simple enough, but if the system isn't operated properly, hackers could use it to attack the system, or even steal data.For example, if the time difference is too great, it will affect the accuracy of the log record. If a fault occurs, it will be very difficult to troubleshoot.What is even worse is that if the server is seized by a malicious hacker, the entire production line could grind to a halt.

Step-by-step instructions for synchronizing the time on your computer with that of the Internet.

Choose a reliable time server.

Don't just use any old public NTP server you find on the internet. Instead, choose one from a business or the NTP Pool Project (such as cn.pool.ntp.org).If the network is internal, it's possible to build one's own local server, thus reducing dependence on external servers.

Configure firewall rules.

Time synchronization protocols (such as NTP) usually use UDP port 123, but don't be lazy and just leave all the ports open.They suggest setting up a "white list" of authorized servers, allowing only authorized devices and servers to communicate, and closing off unnecessary ports to avoid leaving the "door wide open" for hackers.

Regularly check synchronization.

Don't think that once it's set up, you can forget about it! The equipment has to be checked by hand once a week to see if there has been any drift in the time, and if the time has drifted more than one second, the cause needs to be found.By using logging tools, you can monitor and record synchronously, and when you find abnormal requests (such as a strange IP address attempting to connect), you can immediately blacklist it.

Three safety details that are often overlooked.

Don't use the default account name and password.

Many devices come with default administrator accounts, such as "admin" / "123456.You must change them before connecting to the Internet. It's best to set up a complex password and change it periodically, so hackers don't "catch you with your pants down.

Close non-essential services.

If you don't use the remote maintenance or file sharing features of your equipment, turn them off.Every service you add is another entry point for attackers.

Firmware is updated in a timely manner.

Manufacturers often patch such security holes, but many people are too lazy to upgrade.It's recommended that you set your system to automatically check for updates.

What to do in case of problems?

If the time synchronization fails, disconnect the network and check for problems.You check whether the server address is correct, whether the network is working, and whether the firewall has accidentally blocked the connection.If you really can't figure it out, when you contact the manufacturer's technical support department, remember to provide a log of the problem and the error code. It will save you a lot of time.

The most important thing is to constantly improve.It's much better to spend an extra half hour setting up than to spend tens of thousands of dollars on repair later.