Thanks for your interest. I'm currently writing a how-to which will explain how to get this deploy to run successfully. To get this to work with out opening ports is to use the acme.sh automatic dnsapi feature.
I have tested this with the CloudFlare option and it works.
1) If you're currently using Let's Encrypt certs with PAN-OS and your workflow does not look like the above, can you briefly describe it?
Not using LE with PAN-OS.
2) Is your desired end goal that PAN-OS runs Let's Encrypt natively? If not, what is your desired end goal?
Yes. LE native.
3) In between the end goal and now, would you want a stop-gap solution?
4) If you want a stop-gap solution, what form should it take? A standalone executable / script? Ansible module? Terraform resource? Tie-in to an existing Let's Encrypt client, such as certbot or acme.sh?
No thank-you. Waiting for LE native solution.
Thanks, PLA ☮
For me the issue is that if you are running a GP portal on port 80/443 then these methods for getting an LE cert won't work. Even NATing port 80 into another server that will only work when accessed by IP (hostname will try to use https)
Changing the ports that GP runs on is not a very elegant solution. I think having functionality built into PANOS that will take the GP portal into consideration might be helpful. For example in my case it would be nice to have a cert on my lab portal.
I use an LE cert for our GP Portal. And the Web UI for each firewall. The only thing we don't use LE certs for is the rest of the GP infrastructure (gateways and clients). That's all done using the self-signed, trusted ca cert on the portal.
We use DNS-based checks for creating the LE certs. No web server required. Currently using dehydrated (python script) as it was the first one that I found that supports DNS challenge and hook script support. Renewing the certs is completely automated. The only manual part is copying the cert to the firewall, as I haven't gone through all the testing to get it working via the XML API.
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