For some time, servers have been disconnected at intervals.

I thought that the server resources were too high and it was constantly optimized and modified, but problems still appeared from time to time. I even thought it was because there was a problem with the server or the computer room gateway was blocking it. Today, I discovered that when the company could not connect to the computer room server, there was no problem with external connection. After rummaging left and right, I finally found it. The key to the problem lies in the company's intranet.

It turns out that there is a file transfer service program test on the server. As long as the connection traffic is high, it will be mistakenly regarded by the company's intranet router firewall as an external attack and blocked, causing the IP to be temporarily interrupted.

Change the router firewall settings OK.