Tunnel stopped working
I have been using the tunnel for 2+ years and today it suddenly stopped working.
When I check the service status on the VM (Debian 12) this is what I get.
root@tunnel:~# systemctl status cloudflared
● cloudflared.service - cloudflared
Loaded: loaded (/etc/systemd/system/cloudflared.service; enabled; preset: enabled)
Active: activating (start) since Thu 2025-04-17 19:24:17 CDT; 37min ago
Main PID: 495 (cloudflared)
Tasks: 9 (limit: 4583)
Memory: 46.9M
CPU: 793ms
CGroup: /system.slice/cloudflared.service
└─495 /usr/bin/cloudflared --no-autoupdate tunnel run --token eyJhIjoiYjJjMDUy...
Apr 17 20:00:21 tunnel cloudflared[495]: 2025-04-18T01:00:21Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=198.41.192.77
Apr 17 20:00:53 tunnel cloudflared[495]: 2025-04-18T01:00:53Z ERR failed to serve incoming request error="Unauthorized: Invalid tunnel secret"
Apr 17 20:00:53 tunnel cloudflared[495]: 2025-04-18T01:00:53Z ERR Register tunnel error from server side error="Unauthorized: Invalid tunnel secret" connIndex=0 event=0 ip=198.41.192.77
Apr 17 20:00:53 tunnel cloudflared[495]: 2025-04-18T01:00:53Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=198.41.192.77
2 Replies
That --token ey... string is your Tunnel Secret, with that value anyone can run your tunnel and mitm/hijack traffic. Be very careful with exposing it. It looks like it's invalid anyway though
I'd go to the zero trust page for your tunnel, three dots -> configure,
Refresh the token from the overview page, and then run
sudo cloudflared service uninstall and then copy the install command that Zero trust gives you, from the overview pageThank you I'll give it a try.
All good, appreciate your help. Something to remember too.