Applications/apps/cloudflare-tunnels.md

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

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.

create the tunnel by name fill the name that you want for the tunnel.

cloudflared tunnel create <NAME>

# Take a note where your tunnel credentials are saved.

create a configuration file in the .cloudflared directory

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

set the following lines.

tunnel: Your-Tunnel-Id
credentials-file: /home/$USER/.cloudflared/1d4537b6-67b9-4c75-a022-ce805acd5c0a.json  

1d4537b6-67b9-4c75-a022-ce805acd5c0a.json # Get the json file from previous step.

add your first site example.com

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

create the ingress. create config.yml file in you .cloudflared directory

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'

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