I have a reverse proxy(traefik) on my LAN to handle sub domain service routing. I want https but don’t want to have to install certs on all the clients using the services. I want the s but don’t want my services to be unavailable if my Internet goes down.
Then no, you won’t be able to access your service via https when your internet is down because it’s terminated at cloudlare’s server. You can still access your service directly without https, or with https but with a self-signed certificate.
Thanks for elaborating. Thats exactly my usecase. You can use lets encrypt certs with a dns challenge I believe. You wildcard a subdomain like *.abc.def.com
I believe you have to expose your ports once to get the cert and close them immediately. You set the domain to point to the public ip of your router, get the challenge done, close ports and the public domain goes nowhere.
Install the cert, point the local dns to your server ip, done.
I don’t know if cloudflare can do this, but I have a different DDNS + Let’s Encrypt setup and I configure my router to set the same local domain as the public domain (in openwrt it’s local server + local domain although I’m not aware of the distinction between the two). So when requests are sent over LAN (or over a VPN) the router points me to the LAN device directly, rather than needing to go through external DNS. HTTPS still works since to the client it’s the same domain as the certificate is linked to.
Hope that makes sense as I haven’t fully got my head around it. I just know it works (indeed I just disabled my internet to test, and the services are still accessible over HTTPS).
I have a reverse proxy(traefik) on my LAN to handle sub domain service routing. I want https but don’t want to have to install certs on all the clients using the services. I want the s but don’t want my services to be unavailable if my Internet goes down.
Then no, you won’t be able to access your service via https when your internet is down because it’s terminated at cloudlare’s server. You can still access your service directly without https, or with https but with a self-signed certificate.
Thanks for elaborating. Thats exactly my usecase. You can use lets encrypt certs with a dns challenge I believe. You wildcard a subdomain like *.abc.def.com
Then you set your services to e.g. homeassistant.abc.def.com both on proxy and local dns.
I believe you have to expose your ports once to get the cert and close them immediately. You set the domain to point to the public ip of your router, get the challenge done, close ports and the public domain goes nowhere.
Install the cert, point the local dns to your server ip, done.
If you need more info, let me know.
I don’t know if cloudflare can do this, but I have a different DDNS + Let’s Encrypt setup and I configure my router to set the same local domain as the public domain (in openwrt it’s
local server+local domainalthough I’m not aware of the distinction between the two). So when requests are sent over LAN (or over a VPN) the router points me to the LAN device directly, rather than needing to go through external DNS. HTTPS still works since to the client it’s the same domain as the certificate is linked to.Hope that makes sense as I haven’t fully got my head around it. I just know it works (indeed I just disabled my internet to test, and the services are still accessible over HTTPS).
You only need a letsencrypt cert on the reverse proxy, the services themselves don’t need them.