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Configure Zero Trust Network Access in Cloudflare for Teams

In this tutorial we will cover how to configure a Zero Trust Private Network in Cloudflare for Teams by combining device enrollment rules, Cloudflare Tunnels, and identity-based network policies.

🗺️ This tutorial covers how to:

  • Create device enrollment rules and connect a device to Teams
  • Connect your private network server to Cloudflare's edge using Cloudflare Tunnels
  • Create identity-aware network policies

⏲️Time to complete:

45 minutes

Device enrollment

The first step is to enroll your devices into the WARP client. The WARP client is responsible for forwarding your traffic to Cloudflare and eventually to your private network.

  1. Define device enrollment rules under Settings > Devices > Device enrollment permissions > Manage.

    In this example, we require that users have a hard key inserted and are connecting from the United States.

    Device enrollment rules

  2. Enroll your device into your Teams account. To do that, click the WARP icon in your navigation bar, open Settings and select Account > Login with Cloudflare for Teams.

    WARP preferences

  3. Enable the WARP client on the device to forward traffic to Cloudflare.

Server configuration

Next, you will need to configure your private network server to connect to Cloudflare’s edge using Cloudflare Tunnel. This will establish a secure outbound connection to Cloudflare.

  1. Identify the server you want to use to securely make your private network available to users. This can be the origin server directly, a jumphost, or load balancer.

  2. If your server or network has a firewall, follow this guide to open up the correct ports and IP addresses. Only outbound openings are required. You do not need to open any inbound holes in your firewall.

  3. Install cloudflared on the server.

  4. Authenticate cloudflared on the server by running the following command, then follow the prompt to authenticate via URL provided.

    $ cloudflared tunnel login
  5. Next, create a tunnel for the device:

    $ cloudflared tunnel create <TUNNEL NAME>
  6. Create a YAML config file for the tunnel with the following configuration:

    tunnel: <YOUR TUNNEL ID>
    credentials-file: /root/.cloudflared/<YOUR TUNNEL ID>.json
    enabled: true
  7. Now run the tunnel:

    $ cloudflared tunnel run <TUNNEL NAME>

    Run the Tunnel

Network configuration

Finally, you will need to establish the private RFC 1918 IP address or range that you would like to advertise to Cloudflare, as well as set the identity policies determining which users can access that particular IP or range.

  1. Route the private IP addresses of your server’s network to Cloudflare, where:
  • is the IP or CIDR range of your server

  • 8e343b13-a087-48ea-825f-9783931ff2a5 is your tunnel ID

    $ cloudflared tunnel route ip add 8e343b13-a087-48ea-825f-9783931ff2a5
  1. Open your Teams dashboard to the Gateway > Policies tab.

    First network policy

  2. Create a network policy to allow traffic from specific users to reach that application.

    Second network policy

  3. Create a second network policy to block all traffic to the IP range that was routed.

    Create network policy

  4. Verify that you do not have the desired target private IP range in the Split Tunnel configuration menu. This menu can be found at Settings > Network > Split Tunnels.

    Split Tunnel

Your setup is now complete. For more in-depth information on how identity-aware network policies work, read our dedicated documentation page.