Cloudflare Installation

 Well, now the million-dollar question, how can I make my website accessible to everyone? My ISP doesn't provide a public IPv4, so I thought about using a DDNS service like No-IP or the one included in Google Domains . However, I encountered another problem; my ISP uses double NAT, meaning my IPv4 could only be accessible to other users on my ISP. I realized I had a public IPv6 (although I believe it's also dynamic), so I added all my domains in AAAA records pointing to my IPv6 in the DNS. It worked for a moment, this way I didn't have to open ports on my router because that IP was unique to my PC. But there was a serious issue; my site was inaccessible to any network that didn't have IPv6 enabled (for example, my school's network).

My sites remained like this until one day I discovered a video by Network Chuck talking about Cloudflare Tunnels. I followed the instructions in his video, with a few small changes :3

I wanted to create the tunnel from the terminal and not in the panel, so I followed the instructions in the docs Create a locally-managed tunnel (CLI) · Cloudflare Zero Trust docsfor creating a locally-managed tunnel (CLI).

Afterwards, I found it very complicated to write the entire command to start my tunnel, so I created this script to execute it with 'mytunnel' (remember to make it executable).

	#!/bin/bash
	# Save this file in /usr/local/bin
	sudo cloudflared tunnel run mytunnel

view raw mytunnel hosted with ❤ by GitHub

It was also challenging to write the entire command to add my subdomain to the DNS, so I made this script.

	#!/bin/bash
	# Save this file in /usr/local/bin
	read -p "Ingresa el subdominio: " subdomain
	if [ -z "$subdomain" ]; then
	echo "Error: Debes ingresar un subdominio."
	exit 1
	fi
	echo "$subdomain.example.com"
	sudo cloudflared tunnel route dns mytunnel $subdomain

view raw mytunneldns hosted with ❤ by GitHub

Finally, I didn't want to have a terminal where the tunnel was always running, especially because I had to disconnect the SSH. So, I turned it into a service to start at system boot (remember to enable your service).

	# Save this file in /etc/systemd/system
	[Unit]
	Description=Start Cloudflare tunnel on boot
	[Service]
	Type=simple
	ExecStart=/usr/local/bin/mytunnel
	[Install]
	WantedBy=default.target

view raw mytunnel.service hosted with ❤ by GitHub