Hello Jijo, suddenly the captive portal appears, but ...
does not work (see error on the bottom)
About your suggestion: in Cloudpath 5.4 Mac registration already has the option for ICX with redirect and post. I've even tried with forcing a redirect as indicated in the document you've posted, but i have this:
Web Auth in Vlan 75: Authentication failed (# of attempts tried: 3) for user : stefano using mac: xxxx.xxxx.xxxx
Could be the mac address syntax?