In accordance with the following requirements, share /common directory through smb service.

-- your sub service must be in the SAMBA working-set

-- the shared name of common is common

-- the common share just can be shared by the customers in the example.com domain

-- the common must be available for browsing

-- mary must be able to login to the SMB share and for read operation, “password” is the secret code if it need to be verified.