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Tailscale/synology/NFS remote access
(lemm.ee)
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this post was submitted on 04 Jul 2024
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It's the same error regardless of whether I connect by tailscale IP (100.x.x.x) or the tailscale hostname, and it strongly suggests an issue on the Synology, but everything looks correct on the NAS (but I am by NO MEANS an expert):
mount.nfs: access denied by server while mounting $IP:/volume1/$mountThen you need to ssh into both devices and confirm they can both ping each other via the tailscale interface as a starter. That will at least shownif you have a routing problem.
Apologies for the delay. July 4th festivities and rescuing a kitten from a storm drain intervened (upside: we now have a kitten).
I can ping the NAS from the client on the Tailscale IP (100.x.x.x) and the tailscale hostname. If I SSH to the NAS, I cannot ping the client machine, but everything on the NAS is available from the client other than the NFS share (and I think I remember reading that the Synology tailscale client does not support ping).
I realize we're sort of narrowing in on an NFS setting or possibly a firewall setting, and I appreciate your patience in going on this journey with me, but I have configured both according to, most relevantly, the tailscale documentation for connecting to a Synology NAS.
I don't use synology but it kind of seems like the synology has an allowlist for subnets that can connect to it. Do you know what service is hosting the file share?
The allowlist for NFS allows the tailscale subnet and the local LAN subnet.
Does tailscale have a consistent subnet? Can you connect to the NFS share over the LAN net?