Keeps folders in step between this server and your computers, directly and privately, with no cloud in between
On this page
Good to know before you install
For computers and laptops; phones get the shared folders with the LibreSync app. Its settings page reaches every shared folder, so keep it to admins.
At a glance#
- What it is
- File Sync Storage
- Where it opens
- Web Interface
On its own port at
http://your-server:port, orsyncthing.your-domainonce you have a domain - Updates
- Automatic A backup is taken first, and it rolls back if the update fails
- Backups
- Included Part of the daily backup when that's switched on
- Copies
- One per server
There's no step-by-step guide for Syncthing here yet. Everything below comes straight from the app catalogue, so it's what LibrePortal really does when you install it. For using Syncthing itself, its own documentation is the place to go: github.com/syncthing/syncthing.
Addresses and ports#
Syncthing has 3 ports. LibrePortal picks a free port number for each when you install, so yours will differ from anyone else's. The Config tab's Network section shows them, and the app's Open button uses the right one.
| What it is | Who can reach it | With a domain |
|---|---|---|
| Web Interface | Trusted places only | syncthing.your-domain |
| Sync TCP | Trusted places only | Port only |
| Sync (QUIC) UDP | Trusted places only | Port only |
Settings#
In its config file#
Syncthing's own settings aren't on the Config tab yet. They live in the app's config file, described here so you know they exist. How to change them.
| Setting | What it does | Starts as |
|---|---|---|
NameCFG_SYNCTHING_DISPLAY_NAME |
What this app is called on your dashboards. Leave empty to use its usual name | Empty |
Show on the LibrePortal DashboardCFG_SYNCTHING_SHOW_ON_DASHBOARD |
Whether this app gets a shortcut on the front page of the LibrePortal WebUI, separate from any Dashy dashboard Choices: true, false |
false |
Crash and usage reportsCFG_SYNCTHING_TELEMETRY |
Whether Syncthing may send crash reports and anonymous usage statistics to its developers Choices: true, false |
false |
Works with#
These are the other apps Syncthing knows how to work with. Once it's installed, its page shows the same list with whether each one is connected. How this works.
- Shared folders: Sees the shared folders under Shared, so you can keep any of them in step with your computers. There's nothing to switch on; LibrePortal shows whether it can work and lets you check.
- Grafana: Shows dashboards for the apps that have one. works with every app
- Prometheus: Collects metrics from the apps that can export them. works with every app
- Uptime Kuma: Watches your apps and shows when one goes down. works with every app
Privacy and security#
Worth knowing Syncthing moves files directly between your own devices. It finds them through Syncthing's public discovery and relay servers, which can see your device ID and address; that is left on so your devices can reach each other away from home.
What leaves this server#
- Public discovery and relay servers see your device ID and address
- Crash reports go to Syncthing after a failure (can be turned off)
What LibrePortal turns off#
- Automatic upgrades
Licence: MPL-2.0. Audited: 21 October 2026. See the privacy of every app and the Promise.
Sources#
Under the hood#
- It runs this image:
syncthing/syncthing:2.1.6@sha256:4d0281bdcb4ed9baf503d251d0544ddd856f49fce3f114056257ae172b7fb670. - It can sit behind Authelia's sign-in once Authelia is installed.
- Its own project and documentation: github.com/syncthing/syncthing
Ports, settings, tools and connections on this page are read from LibrePortal v0.10.97's app catalogue each time the guide is built.