I’m trying to create a Certificate from Fortigate Firewall over Let’s encrypt, and I’m getting the following error: Cannot negotiate ALPN protocol “acme-tls/1” for tls-alpn-01 challenge
Is there anything that I need t set up on Cloudflare side since ?
I cannot ever see the
TLS-ALPN-01 challenge working with an hostname.
You can try and use the
dns-01 capability of your FortiOS device, or change to .
What is the use case where you need your FortiOS to be ?
I do not have my hostname proxied. I tried to add multiple different subdomain names to add in A record but got the same error
I was able to fix the issue; in Firewall, HTTPS port needs to be default in order for the Certificate update to work. So it can not be anything else except port 443