An SRX device fails to onboard to Security Director Cloud even though the device has internet connectivity and the outbound SSH feature is configured.

Upon verification, no outbound SSH session is established on TCP port 7804. The issue occurs when the management interface is configured under the mgmt_junos routing-instance, but the outbound SSH configuration does not specify the routing instance. As a result, the SRX attempts to initiate the connection using the default routing table instead of the management routing instance.

Adding the routing instance to the outbound SSH configuration, the SRX establishes the outbound SSH session on TCP port 7804, allowing the device to successfully onboard to Security Director Cloud.

set system services outbound-ssh routing-instance mgmt_junos