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Synology

Create Cloudflare Tunnel to a Synology NAS​

  • run cloudflared inside a Docker container via Synology's Container Manager

synology

Step 1: Create the Tunnel in Cloudflare​

  • Cloudflare Dashboard >Networks > Connectors > Tunnels > Create a tunnel.
  • Give your tunnel a descriptive name (e.g., tunnel-to-nas) and click Save tunnel.
  • You will see a page showing installation commands for various environments. Look at the code block for Docker.
  • Important: Do not copy the whole command. Copy only the long alphanumeric string that follows --token.

Step 2: Deploy cloudflared on Synology​

  • Synology DSM > Package Center > Container Manager is installed and running
  • Open Container Manager, click on Registry in the left panel, and search for cloudflare/cloudflared
  • Select the official image (cloudflare/cloudflared), click Download, and choose the latest tag
  • Once downloaded, go to the Image tab, select cloudflare/cloudflared:latest, and click Create.
  • Configure the general settings：
  • Container Name： cloudflared
  • Enable Auto-Restart：Checked (highly recommended so the tunnel reconnects if the NAS reboots).
  • Click Next to access the Advanced Settings：
  • Network：Change this from bridge to host. This lets the container talk to your local DSM ports smoothly.
  • Execution Command：In the Command input box, overwrite anything there and type:
tunnel run --token YOUR_COPIED_TOKEN_HERE
  • Cloudflare Tunnel Dashboard. Within a few seconds, the status of your tunnel should change from Inactive to Healthy .

Step 3: Route Traffic to DSM​

  • Cloudflare Dashboard > Zero Trust > Networks > Connectors > tunnel-to-nas > Published application routes > Add
  • subdomain: nas
  • domain: yourdomain.com
  • service type: http
  • service url: localhost:5000