In a previous post I described how to run Kerberos KDC (Key Distribution Center) on a Linux desktop client for authentication. The KDC was used to let this same client access NSF shares on a Synology NAS. This worked fine when the Linux desktop was the only client using the Kerberos authentication, since shutting down the Linux desktop makes the KDC unavailable for authentication. Recently I started using a laptop with Linux and also wanted to access the NFS shares from there. Of course I could start up the desktop with KDC each time I use the laptop at home, but that is rather impractical and a waste of energy. Solution: running a lightweight container with Kerberos KDC on the Synology NAS itself. This blogpost will describe how to do that.

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