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How secure is my local backup drive with ssfhs? (discuss.tchncs.de)
submitted 12 hours ago by 712@discuss.tchncs.de to c/selfhosted@lemmy.world
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Hello everyone.

I have been interested in starting to self-host, and I have just been able to set up the first useful thing for myself (apart from a PiHole that I have running).

Since I am very afraid of making security mistakes, I would like to get feedback from you if my setup is secure or not.

The simple use case: I want to be able to back up files from my main computer to a hard disk, without having the hard disk attached to my main computer.

The setup:

  • A Raspberry Pi 4 running Raspberry Pi OS Lite (64-bit).
  • The Raspberry Pi can only be accessed via ed25519 key.
  • I configured a firewall on the Raspberry Pi with ufw to allow only traffic from the local subnet.
  • I then use sshfs to mount the hard disk connected with the Raspberry Pi to my main computer.
  • I plan to use rsync to back up my files.

Now I need your help: how secure is this setup? Did I make any major mistake? Is there something I could do better?

I'd be happy to get some feedback... ๐Ÿ™‚

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[-] bandwidthcrisis@lemmy.world 1 points 2 hours ago

Rsync can. For instance, rename files instead of deleting them, so that your backup keeps old files in case they need recovering.

It can also make hard links to existing files so they you can create multiple backup directories that share unchanged files to save space.

Also check out rclone, a similar tool with a focus on supporting many target types, plus it can encrypt a remote location, then mount that backup to access the decrypted files.

this post was submitted on 02 Jul 2026
19 points (100.0% liked)

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