I'm using a NAS (Buffalo LinkStation Pro with SSH access, if that matters) which runs Linux ( #1 Fri Jun 8 11:07:30 JST 2012 armv5tel GNU/Linux, with smbd --version = Version 3.0.30-1.4.osstech), while all clients run Windows 7. Currently, the shares are on a xfs partition. How can samba be modified such that the share behaves like an NTFS share to the clients, i.e. allowing for encryption? Or do I need to reformat the partition as an NTFS drive (or more likely, use a loop-mounted NTFS file)?

  • Do you want the server or the client to do the encryption? If you want to do encryption in the Windows client, you're asking on the wrong site: flag to have your question migrated to Super User. Commented Oct 10, 2012 at 23:12
  • @Gilles I'd prefer if the client did the actual encryption. But what I'm asking for is how (if possible) to set up samba (or whatever else is required on a Linux server) such that a network share will be treated with EFS support. It's a question about a Linux server interacting with Windows clients, so if the question is off-topic here, I'd rather have it migrated to Server Fault. But since the ideal solution would simple have the NAS share look like a true Windows machine share, it is a *nix question IMHO Commented Oct 11, 2012 at 5:46
  • @Gilles ... However, I may have asked the wrong question. How to set up an encrypted directory to be mounted only during samba access? is maybe a better idea... Commented Oct 11, 2012 at 6:09

1 Answer 1


A Samba share can never behave as a NTFS share, only as a SMB/CIFS share. If you want encryption then you will need to use a per-file/directory tool, or implement it in the server instead.

  • Does that mean there is no way to have the NAS share files that are en-/decrypted transparently on the client side? Commented Oct 10, 2012 at 15:04
  • The NAS will share whatever files you like, but the transparency must be handled by the client unless you, again, implement it in the server. Commented Oct 10, 2012 at 15:12
  • And can't NTFS do exactly that, and the NAS would simply store the encrypted data more or less without knowing it's encrypted? Commented Oct 10, 2012 at 15:15
  • Yes. But you can't use NTFS over SMB. Commented Oct 10, 2012 at 15:16
  • I see :-/ So the only way to have transparent client-side encryption is via some third-party software? Can't I share like another Windows PC does, where encryption is possible? Commented Oct 10, 2012 at 15:23

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