This article describes how to change the amount of time SSH sessions are
Note: You need 'root` access to complete the following steps.
The Host value, which you can name anything you want, is simply a label for the other
settings. To enable the keep-alive system-wide, edit the file /etc/ssh/ssh_config:
Hostname examplehost.com ServerAliveInterval 180 ServerAliveCountMax 2
To make your OpenSSH server keep all connections alive with clients, add the
following to /etc/ssh/sshd_config:
Important: These settings make the SSH client or server send a null
packet to the other side every 300 seconds (five minutes) and give up if it
doesn't receive any response after two tries. At that point, the system
likely discarded the connection anyway.
This parameter sets the number of server alive messages, which the system might
send even if SSH1 receives no messages from the server. If the number of server
alive messages exceeds the threshold value, SSH disconnects from the server,
terminating the session.
This parameter sets a timeout interval in seconds. If the process receives no data
from the server after this limit, SSH1 sends a message through the encrypted channel
to request a response from the server. The default,
0, indicates that the system
doesn't send these messages to the server, and
300 shows that you set the BatchMode
option. This option applies to protocol version 2 only. ProtocolKeepAlives and
SetupTimeOut are Debian-specific compatibility aliases for this option.
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Updated 22 days ago