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KB450274 – Restricting Domain User Login

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This article will outline how to restrict Domain User login when joined to a Active Directory.


  • Already joined a Active Directory
    • See this article on how to join a Domain


  • Open “/etc/security/pam_winbind.conf” for editing
vim /etc/security/pam_winbind.conf
  • Add a membership entry specifying one or more SIDs:
    • SIDs or group names should be separated by commas and no spaces. Do not create multiple require_membership_of lines or only the last will be used.
  • Restart winbind
systemctl restart winbind


Try to login using the command below and confirm they can not connect:

su 'domain\user'


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