Network equipment may terminate TCP connections after a period of inactivity. Vulcan's gateway uses autossh, which by default sends a keepalive signal every 10 minutes. If the network equipment is configured to timeout before this duration, it can lead to network disconnections.
Steps to Change the Default SSH Keepalive Time:
Log In to the Gateway Machine:
Access the gateway machine where you need to change the keepalive settings.
Edit the Configuration File:
/etc/rc.localfile for editing. This file contains startup commands that are executed when the machine boots.
Modify the Keepalive Setting:
Add the following line to the file before any command that starts with
180with the desired number of seconds for the keepalive interval. This value should be less than the timeout period set on your network equipment.
Reboot the Machine:
After saving the changes, reboot the machine to apply the new configuration. This ensures that the updated keepalive setting takes effect.
Note: It's important to choose a keepalive interval that is appropriate for your network environment. Setting it too low might result in unnecessary network traffic, while setting it too high might not prevent disconnections effectively.