NAS-129763 / 24.10 / Expose ability for users to configure SMB encryption behavior #13937
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This commit adds a new SMB server global parameter for SMB transport encryption. It exposes 4 options:
DEFAULT -- follow upstream / truenas default (reflected as a null in db) -- currently NEGOTIATE
NEGOTIATE -- only encrypt transport if explicitly requested by the SMB client
DESIRED -- encrypt transport if supported by client during session negotiation.
REQUIRED -- always encrypt transport (rejecting access if client does not support encryption -- incompatible with SMB1 server).