How to change Samba authentication route?

[Xia Xiongjun]

Dear samba-technical members:

Thanks for your great work, We have such a splendid Samba to smooth our
work and life so much.

These days I want to develop a project(*2) which authentication route is
not the same with current Samba.(*1)

The image with (*1) and (*2) is attached.

I wander if it is possible or hard to implement this?

Any help or tips will be appreciated.

Respectfully,

Xia Xiongjun
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