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this post was submitted on 04 Dec 2025
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You could use a very low power computer that's always on like a Raspberry PI Zero W to send the WoL packet to the backup computer. It only uses about 1 watt. Some routers have the ability to send a WoL packet as well.
thats a good idea, although wifi is not reliable enough for me. Although I found this guide which shows how to add an ethernet port to a PI zero w so hopefully I can use that. Or maybe I should just use a ESP32.
And how do you communicate with the Pi0?
Wireguard between you and remote device like a pi. Set pi to portfowarding and masquerading on. It will then let you be on say a 10.x.x x network remotely but will send info on the remote LAN like it came from that pi local IP
Use SSH. Ether open a port in the firewall or connect it to a VPN. If the backups are done on a schedule, you could also setup a cron job on the Pi to send the WoL packet a few minutes ahead of time.
Use a VPN; don’t open up SSH to the internet.
Or just be cautious, thoughtful and sensible if you do. Only a Sith deals in absolutes.
Ssh over Internet is fine as long as it's properly setup (no password auth, root not allowed, etc.). Obviously a VPN is even better.