Re: Mounting NFS share from Synology NAS
On Tue, Feb 01, 2022 at 04:32:57PM +0100, Christian Britz wrote:
> Hello,
>
> I am playing with NFS on my home network for the first time and I have
> some difficulties/questions.
>
> The server is a Synology NAS, it is based on Linux, supports NFS4 and
> gets configured by a web interface.
> The NAS offers a Kerberos authentification for NFS but I did not
> configure this. Instead, something called AUTH_SYS is enabled. Only one
> specific host is allowed to access the share.
>
>
> This is my entry in /etc/fstab:
> diskstation:/volume1/Medien /Daten nfs
> nfsvers=4,rw,x-systemd.automount,noauto 0 0
>
> Mounting only works as root, I guess this is expected without further
> configuration.
>
> 1. Security: It seems that the only security check is the check for my
> IP adress. Is it possible to achieve more without dealing with Kerberos?
>
> 2. Accessing the mounted share with my personal user: The access rights
> for /Daten look right, the user on the NAS has the same name as the user
> on my machine. But:
And how about the userId?
The username does not mean anything. The access control is
based on Id.
>
> ls -ahl /Daten/
> ls: cannot open directory '/Daten/': Permission denied
>
> sudo ls -ahl /Daten/
> [sudo] password for xyz:
> total 340K
> drwxrwxrwx 14 xyz root 4.0K Jan 30 21:31 .
> drwxr-xr-x 19 root root 4.0K Jan 24 09:58 ..
> drwxrwxrwx 5 xyz users 4.0K Jan 30 21:31 Directory1
> drwxrwxrwx 4 xyz users 4.0K Aug 10 10:28 Directory2
>
> Why can't user xyz access the mountpoint?
>
> Thank you for your support.
>
> Regards,
> Christian
>
-H
--
Henning Follmann | hfollmann@itcfollmann.com
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