Para visualizar a chave do SambaSID:
# net getlocalsid
SID for domain SERVIDOR is: S-1-5-21-539773990-1534018360-2778324544
Para alterar a chave:
# net setlocalsid S-1-5-21-1935951377-3571214764-3921200734
# net setdomainsid S-1-5-21-1935951377-3571214764-3921200734