300-435 Question 301
Single answerA network administrator is deploying an external captive portal solution to authenticate guest users in a Cisco network. The portal uses REST APIs to communicate with the Cisco Wireless LAN Controller (WLC). Which step is required to ensure successful integration of the external captive portal with the WLC?
- A
Configure the WLC with the external captive portal URL and enable the external WebAuth feature.
- B
Enable the RADIUS server on the WLC and link it to the external captive portal.
- C
Configure the external captive portal to use SNMP for communication with the WLC.
- D
Enable WPA2-Enterprise on the WLAN to support the external captive portal.
Show answer and explanation
Correct answer: A
Explanation
External captive portal integration with a Cisco WLC requires the controller to redirect unauthenticated users to the portal for authentication. This is achieved by configuring the external captive portal URL on the WLC and enabling the external WebAuth feature. The external portal communicates with the WLC using REST APIs to validate user credentials or provide access tokens.
- A. Correct.
Correct. The WLC must be configured with the external captive portal URL and the external WebAuth feature enabled to redirect users to the portal for authentication.
- B. Incorrect.
Incorrect. While RADIUS servers can be used for authentication, they are not directly linked to the external captive portal API integration in this context.
- C. Incorrect.
Incorrect. SNMP is not used for communication between the external captive portal and the WLC; REST APIs are typically used instead.
- D. Incorrect.
Incorrect. WPA2-Enterprise is not relevant to captive portal functionality, as it is focused on securing wireless access with 802.1X authentication.