Ssh connection to Linux is automatically disconnected and cannot be connected again

Ssh connection to Linux is automatically disconnected and cannot be connected any more. recently, the company's testing machine is a little crazy. The situation is as follows: it is normal to use after logging on to SSH, but another computer is also logged on, at this time, all disconnections will occur, and the connection will no longer be available. even the IP address cannot be pinged. Try at/etc /...
Ssh connection to Linux is automatically disconnected and cannot be connected any more. recently, the company's testing machine is a little crazy. The situation is as follows: it can be used normally after logging on to Linux using SSH, but another computer
You are also logged on. at this time, all connections will be disconnected, and you will not be able to connect any more. you cannot even PING the IP address. Today, I tried to add the following content to/etc/hosts. deny: sshd: all and then restart the xinetd process: service xinetd restart. I tried logon from several different IP addresses and found that the problem was solved. Setting SSH to allow access by all users. although I do not know the underlying reasons, the problem is finally solved.