How to push WAN IP( DDNS ), use pfSense to Cloudflare(A record), and how I fix the problem | 如何推送 WAN IP（DDNS），由 pfSense 到 Cloudflare(A record)，以及我如何解決問題
Answer: (Disclaimer: Don't do that in your company environment! if you setup on your lab, take any risks by yourself! For firewall( pfSense ) DDNS service, use Cloudflare Global API Key instead of customized permissions API Tokens, my pfSense Version is 21.05-RELEASE (arm64)