Is it possible for Passbolt to be able to use my secondary network card and be accessed from it ?
My Ubuntu VM already has the 2 cards but Passbolt can be accessed only from my Network Card 1 and not Network Card 2 ( When i am trying to access it from the secondary card it redirects to nginx!).
If I understand well, you would like to access Passbolt from 2 different networks.
You cannot use Passbolt with 2 IPs.
You should use Passbolt with a domain name instead of IP, and resolve the domain name to the IP according on which Network you are. That means you must have one DNS server per network.