@rozenn_bondoc Hello again.
From the sounds of it the rockstor hardware only has one working network card, but your project requires the use of 2 cards. If only one is visible to Rockstor’s linux base then that is the base of your problem. You could also look at:
ifconfig -a
as that will show both up and down interfaces.
Rockstor does have an ability to use multiple network cards to have such arrangements as Web-UI only on one while all client ie samba users are on another network. But it doesn’t provide a dhcp server on any interface so that may be relevant. Only once a network card is visible to Rockstor’s base, linux (ie above command) will it be configurable via Rockstor’s Web-UI ie System - Network.
I have also replied to another post that looks similar to this one, there may be some information in that thread that relates:
Appologies if I have misunderstood your requests.