> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hologram.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Enable or disable secure device tunneling with Spacebridge

> Configure Spacebridge tunneling to enable or disable secure, authenticated tunnels for inbound connectivity to any port on your IoT devices. Spacebridge provides secure remote access without exposing devices to the public internet.

## How to enable/disable secure tunneling for a single SIM

1. Find your SIM from the SIMs pages or using global search.
2. Click the **Manage SIMs** menu at the top of the page.
3. Choose **Manage secure device tunneling**
4. Confirm the configuration change

## How to enable/disable secure tunneling in bulk

1. Navigate to the **SIMs** page in your dashboard
2. Filter for devices you want to configure
3. Select up to 10 devices by checking the boxes
4. Click the **Manage SIMs** menu at the top of the list and Choose **Manage secure device tunneling**
5. Confirm the configuration change

<Note>
  **Note:** For programmatic Spacebridge management, use the [Device Tunneling API endpoints](/api/1/tunnelkeys/get) to manage tunnel settings via REST API calls.
</Note>

## Related guides

<Card title="Device tunneling for beginners" href="/guides/communication/device-tunneling-for-beginners">
  Get started with device tunneling
</Card>

<Card title="Establish a secure tunnel" href="/guides/communication/establish-a-secure-spacebridge-tunnel-to-a-device-using-ssh">
  Establish a secure tunnel to a device using SSH
</Card>

<Card title="Troubleshooting device tunneling" href="/guides/communication/troubleshooting-device-tunneling">
  Troubleshooting device tunneling
</Card>