Hi Koichi,
It should be no different from logging in from anywhere else, unless you have some firewall rules set.
So on my Lab Alchemy AWS image I can simply ssh to the Delphix engine from the jump box using the internal IP address something like ssh
delphix_admin@10.x.x.10 .
If you want a direct URL from your laptop for a Lab Alchemy image then you would need to get the firewall adjusted.
Regards,
Gary