The command that enables web-based client authentication on the WLAN issecurity web-auth. Cisco’s Catalyst 9800 Web-Based Authentication guide shows the WLAN configuration workflow: enter WLAN configuration mode, disable WPA security for the open Layer 2 guest WLAN, then “Enable web authentication for WLAN” usingsecurity web-auth. Cisco then applies the authentication list and parameter map withsecurity web-auth authentication-list ...andsecurity web-auth parameter-map ..., which refine the WebAuth method and portal behavior after WebAuth itself is enabled.

Cisco’s LDAP authentication example mirrors the exhibit exactly:wlan webauth 2 webauth, removal of WPA/802.1X Layer 2 security,security web-auth,security web-auth authentication-list ldapauth, andsecurity web-auth parameter-map global. Option B only creates or enters the WLAN profile with WLAN ID 2 and SSID name. Options C and D disable WPA2 and 802.1X AKM; they do not authenticate clients. Reference topics:Client Connectivity Configuration — guest WLAN authentication, WebAuth, Layer 3 security, authentication lists, parameter maps, and Catalyst 9800 WLAN security configuration.