1. The problem I’m having:
Hi there,
I am trying to use cloudflare DDoS protection on DNS level. Now I am getting HTTP 525 as the cert is invalid.
I found this source How to use Caddy with Cloudflare's SSL settings
So I would need to download GitHub - caddy-dns/cloudflare: Caddy module: dns.providers.cloudflare in order to get this working?
2. Error messages and/or full log output:
The logs tell me:
Cannot negotiate ALPN protocol "acme-tls/1" for tls-alpn-01 challenge
3. Caddy version:
v2.10.0 h1:fonubSaQKF1YANl8TXqGcn4IbIRUDdfAkpcsfI/vX5U=
4. How I installed and ran Caddy:
Ubuntu repository
a. System environment:
Ubuntu 24.04 LTS