Firestorm.ch is a Swiss hosting provider with managed DNS (PowerDNS).
This plugin allows customers to automate Let's Encrypt DNS-01 challenges
via the Firestorm DNS API.
Supports Proxmox, pfSense, and standalone acme.sh usage.
API documentation: https://api.firestorm.ch/acme-dns/health
Fixes the following error when debugging is enabled:
[Sat Feb 21 04:00:22 CET 2026] Here is the curl dump log:
[Sat Feb 21 04:00:22 CET 2026] * URL rejected: Port number was not a decimal number between 0 and 65535
* closing connection #-1
IPv6 addresses in URLs need to be written like this:
http://[2001:43:5::250]
Previous version add bugs that were not properly using the _api_key.
It also enforced to provide PANOS_USER and PANOS_PASSWORD which can be very constraining.
PANOS_KEY now has precedence. If not provided, the script falls back to PANOS_USER and PANOS_PASSWORD.
The error response also contains 'name' in 'zone_name' field,
causing false positives. Check for 'dnssec_status' which only
exists in valid zone responses.
- Added _opusdns_api() for all API requests
- Added _opusdns_init() for config initialization
- Removed duplicate code in add/rm functions
- Removed dead code (orphaned lines 173-178)
- Script now 158 lines (was 255, originally 379)
Instead of fetching all zones and matching, iterate through domain
parts and check each against the API until a valid zone is found.
Same approach as GoDaddy DNS plugin.
Example: _acme-challenge.test.example.com
- Try: test.example.com → 404
- Try: example.com → 200 ✓ → zone found!
Script reduced from 304 to 255 lines.
firestormisp
neil
root
Ludwig
neil
Travis
Tra5is
Eike-Christian Müller
Peter Gerber
infinitydev
alexandergott-afk
dga-nagra
David Gallay
JF DAGUIN
Kilian Ries