Thumbnail image

Cloudflare Tunnel

Cloudflare Tunnel

Protect your web servers from direct attack

From the moment an application is deployed, developers and IT spend time locking it down — configuring ACLs, rotating IP addresses, and using clunky solutions like GRE tunnels.

There’s a simpler and more secure way to protect your applications and web servers from direct attacks: Cloudflare Tunnel.

Ensure your server is safe, no matter where it’s running: public cloud, private cloud, Kubernetes cluster, or even a Mac mini under your TV.

I do everthing in the cli

Lets install the cloudflare tunnel service. in my case i will do the install on een ubuntu machine.

wget -q https://github.com/cloudflare/cloudflared/releases/latest/download/cloudflared-linux-amd64.deb && sudo dpkg -i cloudflared-linux-amd64.deb

When you run the flowing command you get a url. login to cloudflare

cloudflared tunnel login

when cloudflare is connected you get a cert.pem. make a note of the location ;)

Lets make the tunnel by name fill the name that you want for the tunnel.

cloudflared tunnel create <NAME>

Now we will create a configuration file in the .cloudflared directory (the same one that our cert.pem file was written to)

nano /home/$USER/.cloudflared/config.yaml

there is an emty file. Add the following lines.

tunnel:  # tunnel id
credentials-file: /home/$USER/.cloudflared/1d4537b6-67b9-4c75-a022-ce805acd5c0a.json # the location of your credentials file from the previous step

add your first site example.com

cloudflared tunnel route dns <name of the tunnel> <example.com>

Now lets create the ingress. past it in your config.yml file

ingress:
  - hostname: example.com 
    service: http://internalip:80
  - hostname: sub.example.com
    service: http://internalip:88
  - service: http_status:404 # this is required as a 'catch-all'

Lets start the tunnel

cloudflared tunnel run <name of your tunnel>

Make a service to run automatic

cloudflared service install

start en enable the service

systemctl enable --now cloudflared

Setup complete!