Set SSH connection time under CentOS

For security reasons, if the user is idle after connecting to the SSH server, SSH server will automatically terminate the SSH connection after a certain period of time. Here's how to set the terminating connection time:

1. Open the/etc/ssh/sshd_config file, there is a parameter of Clientalivecountmax, that is, if the client does not have a corresponding, then determine a time-out, this parameter set the number of times allowed to timeout.

2. If the line is preceded by the # number, remove the # number and modify the desired number of times, such as 5.

3. Find the Clientaliveinterval parameter, do not add to themselves, this parameter is to set the user side of the SSH connection idle for a long time after the number of automatic termination, in seconds, can be set 300 seconds, that is, 5 minutes. The two parameters together are 25 minutes to terminate the connection.

4. Save and close the file after modification, restart sshd:

/etc/rc.d/init.d/sshd restart

Set SSH connection time under CentOS