Expose AWS EC2 web app via Cloudflared tunnel
Expose AWS EC2 web app via Cloudflared tunnel
Hello, I really need some help accessing my app via cloudfared tunnel. The app is installed on an AWS EC2 Debian machine. I can successfully hit the page using http://[EC2IP]:[port] configured via inbound security rules. I can also successfully setup the cloudflare tunnel and access it via that tunnel and my personal domain and CNAME, but ONLY if I expose all TCP ports for 0.0.0.0/0. Otherwise Cloudflare cannot access the application. I have tried adding the public cloudflare ipv4 ranges (https://www.cloudflare.com/ips/) to the inbound rules, but that does not work either. Can anyone help with this?
EDIT: got it to work! Thank you so much @lilshalom@Lemmylefty@lemmy.world and @voidx@futurology.today !!
When it doesnt work, check the log files for the firewall block message.
Cloudflare tunnel only requires outbound port opened, check if you've allowed all outbound ports in EC2 security group (the default VPC should have this already).
Otherwise it's probably a misconfiguration reaching the IP/port of the cloudflared service on the EC2. Have you tried checking cloudflared logs? Does your tunnel status show up as healthy?
Yep all outbound ports are opened, per default. Tunnel does show as healthy in the dashboard. The cloudflared logs say the tunnel is established correctly but cloudflared cannot reach the application. I only have my home IP address set on inbound for both ssh as well as the application and port I'm trying to access. I'll look into this into more detail again in a couple hours and look at your and lilshalom's suggestions
He mentioned he was looking at cloudflare logs. So its making an out bound tunnel and when the ec2 firewall is on it doesnt make a connection. If its an outbound tcp connection he should still be able to do a packet capture and see if the handshake is being performed.