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FYDI Sing-Box WhatsApp VPN Access

Use the form below to generate your personal subscription link, then follow the setup guide for your device.

Only needed when connecting from outside the office network.

✓ Links in the setup guides are updated

Setup Guides

Hiddify — Android & iOS

  1. Install Hiddify from Google Play, Apple App Store, or GitHub APK.
  2. Open Hiddify, tap + New Profile.

    Enter a username above and click Generate to get your personalized link.

  3. Paste your subscription URL (or scan the QR code above).
  4. Save the profile.
  5. Go to Settings → Per-app Proxy, toggle ON, select WhatsApp.
  6. Tap the Connect button.
  7. Only WhatsApp traffic goes through the proxy.

Sing-Box — Windows PC

  1. Windows 10 / 11: sing-box-1.13.13-windows-amd64.zip
    Windows 7: sing-box-1.13.13-windows-amd64-legacy-windows-7.zip
  2. Extract sing-box.exe to C:\sing-box\.
  3. Download the setup script:

    Enter a username above and click Generate to get your personalized link.

  4. Open PowerShell as Administrator, run the script.
  5. The service starts automatically in the background.
  6. Continue to Firefox setup below.

Firefox

Choose one method — PAC URL is simpler, FoxyProxy gives more control. You only need ONE.

  1. Open Firefox.
    Go to Settings → General → Network Settings.
    Select Automatic proxy configuration URL.
  2. Enter:

    Enter a username above and click Generate to get your personalized link.

  3. Click OK.
  4. WhatsApp Web in Firefox uses the proxy.

PAC URL auto-configures Firefox to use the local sing-box service. The sing-box PC background service automatically updates when egress IPs change.

  1. Open Firefox.
    Go to Settings → General → Network Settings.
    Select Automatic proxy configuration URL.
  2. Enter:

    Enter a username above and click Generate to get your personalized link.

  3. Click OK.
  4. WhatsApp Web in Firefox uses the proxy.

The egress VPS IP rotates frequently (every 2 hours). If using direct connection, you must return to this page to get the updated IP when your connection stops working. Using Sing-Box PC setup avoids this — it updates automatically.

  1. Install FoxyProxy Standard from Firefox Add-ons.
  2. Open FoxyProxy Options, click Add.
  3. Enter:
    • Title: WhatsApp Proxy
    • Type: SOCKS5
    • Host: 127.0.0.1
    • Port: 2080
  4. Save and select from toolbar.

FoxyProxy routes traffic to the local sing-box service. The sing-box PC background service auto-updates when egress IPs change.

  1. Install FoxyProxy Standard from Firefox Add-ons.
  2. Open FoxyProxy Options, click Add.
  3. Enter:
    • Title: WhatsApp Proxy
    • Type: SOCKS5
    • Host:
    • Port: 1080

    This IP changes every 2 hours. Using Via Sing-Box PC avoids manual updates.

  4. Save and select from toolbar.

The egress VPS IP rotates frequently (every 2 hours). If using direct SOCKS5 connection, you must manually update the proxy IP when your connection stops working. Using Sing-Box PC avoids this.