Overcoming NAT

Do I need this?

Only if you booked a VM without a dedicated IPV4 (NAT) on p2pcloud.

Using Cloudflare tunnels

Create a tunnel

Cloudflare is a fast and free way to expose your web service without having a dedicated IPV4.

Open https://one.dash.cloudflare.com/. Login or register. Then Navigate Acess->Tunnels.

Click “Create tunnel”

Name it

Launch the tunnel on your VM

Select docker and copy your launch command

If you don’t have docker installed, just type apt update && apt install -y docker.io.

Copy your launch command, and add --net=host -d --name cloudflared right after docker run. You will have something like that:

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docker run --net=host -d --name cloudflared cloudflare/cloudflared:latest tunnel --no-autoupdate run --token [your token here]

Check logs

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docker logs cloudflared

It should report successful connections

Launch example service

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docker run -d --name app -p 127.0.0.1:12345:80 strm/helloworld-http:latest

Connect the service to your domain on Cloudflare

Click “next” and use any subdomain you want. Use 127.0.0.1:12345 as an endpoint, that’s where your container example listening.

That’s it! Here is your app served on cloudflare without any port forwarding or dedicated IPs:

Optional: Load balancing and high availability

You can run the same 2 containers app and cloudflared on another VM and get round-robin load balancing and high availability.

Try restarting cloudflared on both servers if load balancing is not working right away.