How to install Syncthing on a Debian server and configure it

Hello!

$ curl -s https://syncthing.net/release-key.txt | sudo apt-key add -
$ echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee --append /etc/apt/sources.list
$ sudo apt update
$ sudo apt install syncthing

Then run it to generate a default configuration:

$ syncthing

To make possible to access to Syncthing from outside, change this line in .config/syncthing/config.xml :

<address>127.0.0.1:8384</address>

to:

<address>0.0.0.0:8384</address>

Note: I recommend to change the port also!

Run again Syncthing:

$ syncthing

Open Syncthing in your browser:

https://<your server IP>:8384

Warning: Make sure that you connect with HTTPS!

You can ignore your browser’s HTTPS warning.

Now, IMMEDIATELY set a password for Syncthing in Settings — >GUI. Also check “Use HTTPS for GUI”.