Digi IX40 User Manual page 528

Services
(config)> service ssh custom config_file "KexAlgorithms +diffie-hellman-group14-sha1"
(config)>
8. Save the configuration and apply the change
(config)> save
Configuration saved.
>
9. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
IX40 User Guide
Configure SSH access
528