Make my IPv6 selfhosted service available on IPv4 network.
My ISP provide me with good IPv6 connection with support of opening ports how I like. But IPv4 is behind a CGNAT and makes me unable to host a service on the legacy Internet.
Unfortunetely some of my friends I want to host (Jellyfin and Nextcloud) for does not have modern Internet connection, so I have to put some proxy.
Now I need suggestions of a solution. VPN on some VPS they would need to connection to is one of them, but it should be as simple for them to use as possible.
server {
listen 80; # listens only on IPv4 port 80
server_name example.com; # your domain name
location / {
proxy_pass http://[2a03:2880:f003:c07:face:b00c::2] # replace with your home server IPv6. Keep the brackets.
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_redirect off;
}
}
Point your A record to your VPS, and your AAAA to the home server.
You'll want to install a reverse proxy of your choice on the VPS. Have clients access it over ipv4 and configure it to proxy pass it to your ipv6 address. Nginx at least is capable of doing ipv4 & ipv6 -> ipv4, I think the inverse should also be possible.
If you can't get the VPS to work, alternatively there's Cloudflare but last I checked streaming was a little out of their free terms. With it, you should just have to set your AAAA record and make the cloud orange, that way Cloudflare will proxy it, and IPv4 will work. There's also Cloudflare tunnels which lets you host websites without port forwarding anything.