The Macbook used the built-in terminal ssh to connect to the server and found that it was disconnected soon. I thought it was a problem with the router, but later I found out that my configuration was not done properly.
Just add ssh heartbeat, the address of the configuration file is /etc/ssh/ssh_config, and the configuration item is ServerAliveInterval
The specific operation is as follows:
sudo vim /etc/ssh/ssh_config
// 一定要sudo，不然没权限修改
// 在末尾添加配置，设置60秒心跳保活
ServerAliveInterval 60
// 保存退出
:wq
As shown below
