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Samba vs NFS vs SSHFS ?
(lemmy.ml)
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this post was submitted on 12 Apr 2024
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How do I set permissions up with NFS? Do I have to have the same uids and gids on both server and clients?
Yes, if you're not using Kerberos for authentication.
Thanks!
In my experience, just making sure the directory you're sharing is owned by
nobody:nogroupis enough.sudo chown -R nobody:nogroup /path/to/nfsThat’s making it public, isn’t it?
I think so.
Ohh, no - you don't want to do that. Why would you do that?
NFS without kerberos uses the UIDs of the remote users to determine access to files on the server. It's very insecure since the client systems can use whatever UIDs they want. It's why NFS has a "squash root" option which blocks any remote system from using UID 0. Kerberos allows users to authenticate so that the server knows who they are on the local system rather than trusting the remote system.
Changing ownership to "nobody" doesn't give anyone access - it just sets the owner to the "nobody" user. You would need to "chmod" to give read/write permissions.
I'm not an expert with this stuff, I just do whatever works. This works, so I do it and when people ask me or just in general how to do it this is what I tell them. Most of the guides I've come across, including one from DigitalOcean, recommends doing this.
Ah - that's the root-squashing I was mentioning. Root is translated to "nobody" on the server. If you're not using the root user or if you've set "no_root_squash" then you don't need/want to do that.
I think that's what the kerberos is there to solve. I've heard that it isn't that bad to set up. I haven't tried and just stuck with SMB.
Yeah, I just wanted to have something mounted at boot on my Linux box from my NAS. Looks like it’s possible with SMB, I just need to figure out how to match the users on my machine with the ones on my server.