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What does ClientAliveInterval mean?
ClientAliveInterval Sets a timeout interval in seconds after which if no data has been received from the client, sshd(8) will send a message through the encrypted channel to request a response from the client. The default is 0, indicating that these messages will not be sent to the client.
What is SSH keepalive?
The ServerAliveInterval option prevents your router from thinking the SSH connection is idle by sending packets over the network between your device and the destination server every 60 seconds. This is also referred to as “keep alive” traffic: sending traffic only to keep the connection alive.
What is client alive Count Max?
client-alive-count-max – This allows us to configure maximum number of times the alive message is sent to the client before the session is terminated. After these attempts, the server shuts down the ssh connection to the particular client that has remained inactive.
What is ClientAliveInterval in Sshd_config?
ClientAliveInterval. Sets a timeout interval in seconds after which if no data has been received from the client, sshd(8) will send a message through the encrypted channel to request a response from the client. The default is 0, indicating that these messages will not be sent to the client.
What is the difference between client and serveraliveinterval?
ServerAliveInterval: number of seconds that the clientwill wait before sending a null packet to the server (to keep the connection alive). ClientAliveInterval: number of seconds that the serverwill wait before sending a null packet to the client (to keep the connection alive).
What is the default timeout for serveraliveinterval?
ServerAliveInterval Sets a timeout interval in seconds after which if no data has been received from the server, ssh will send a message through the encrypted channel to request a response from the server. The default is 0, indicating that these messages will not be sent to the server. This option applies to protocol version 2 only.
What is the default value for serveraliveinterval in SSH?
The default value is 3. If, for example, ServerAliveInterval is set to 15 and ServerAliveCountMax is left at the default, if the server becomes unresponsive, ssh will disconnect after approximately 45 seconds. This option applies to protocol version 2 only. Based on above, 0 means it’s disabled.
What’s the default value for three clientaliveinterval?
The default value is 3, as in three ClientAliveInterval. This is explained in sshd_config manual ( man sshd_config ): Sets a timeout interval in seconds after which if no data has been received from the client, sshd will send a message through the encrypted channel to request a response from the client.