Is it possible to enforece browser challange for Cpative Portal for HTTPS traffic with out SSL inspection on the firewall?
The captive portal is really only used for user-id mappings. What are you attempting to accomplish by this?
The only other alternative to SSL decryption would be the URL proxy feature. But this still requires a CA certificate marked as forward trust which the clients have to trust. Past that you're literally trying to break what SSL was designed for ;)
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