Can't access remote gui

I installed the syncthing app on my Android phone today, and in the course of trying to add a new shared folder, I needed to access the GUI on another Syncthing instance which I have running remotely on a virtual private server.

When I set up the remote instance, a few weeks ago, I thought I had left it publicly accessible with a password. Today however it seems not to want to show itself. So my primary question has to do with accessing the GUI on my remote instance.

It MIGHT be because I installed UFW for the purpose of configuring other applications. But I have run ufw allow syncthing and ufw allow syncthing-gui and still no dice.

Here’s what I get if I query the system service on my remote VPS:

root@localhost:~# systemctl status syncthing@syncthing.service
● syncthing@syncthing.service - Syncthing - Open Source Continuous File     Synchronization for syncthing
   Loaded: loaded (/lib/systemd/system/syncthing@.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2019-11-23 03:50:13 UTC; 11min ago
     Docs: man:syncthing(1)
 Main PID: 9645 (syncthing)
    Tasks: 9 (limit: 1149)
   Memory: 68.4M
   CGroup: /system.slice/system-syncthing.slice/syncthing@syncthing.service
           └─9645 /usr/bin/syncthing -no-browser -no-restart -logflags=0

Nov 23 03:51:53 localhost syncthing[9645]: [I2AND] INFO: Unexpected folder "SyncPhone" (SyncPhone) sent from device "xxxxxxx-xxxxxxx-xxxxxxx-xxxxxxx-xxxxxxx-xxxxxxx-xxxxxxx-xxxxxxx"; ensure that the folder exist...
Nov 23 03:52:42 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 03:53:52 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 03:55:02 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 03:56:13 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 03:57:23 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 03:58:33 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 03:59:43 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 04:00:53 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"
Nov 23 04:01:53 localhost syncthing[9645]: [I2AND] INFO: Dialer for quic://123.456.78.910:22000: unknown address scheme "quic"

(The first error above is because I added a new shared folder from another device, and I haven’t been able to access the GUI to “approve” it).

I’m wondering if I need to do something to configure the “quic” protocol?

I also notice that there is no GUI IP address shown above.

Here’s the GUI section of my config file for your reference:

<gui enabled="true" tls="true" debugging="false">
    <address>0.0.0.0:37147</address>
    <user>myusername</user>
    <password>mypasswordhash</password>
    <apikey>myAPIkey</apikey>
    <theme>dark</theme>
</gui>

(To confirm, when I try to access the GUI, I use https://my.server.ip.address:37147 — but I have also tried port 8384 just in case. Neither one works.)

Let me know if I can provide any other info. Thanks!

“ufw allow syncthing-gui” will open port 8384, not whatever port you’ve set. So you might need to tweak your ufw or port. The QUIC complaint is probably that your Syncthing is older than other devices you have and would like an upgrade.

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Thank you! This was it.

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