Dell ThinOS 2211, 2208, and 2205 Administrator’s Guide

Enable captive portal detection for wireless

When you attempt to connect to WiFi, a web page is displayed to verify the authenticated users, before Internet access is granted. ThinOS supports a captive portal that is based on HTTP redirect. Any captive portal that is based on DNS redirect or ICMP redirect is not supported in the current ThinOS release. If an OPT (options) record with DNS resource record (RR) type 41 is available in a received DNS response, the same OPT record must be available in the Additional records section. ThinOS does not support the DNS response with an OPT record that is available in the Answer section.

1. Open the Admin Policy Tool on ThinOS or go to the ThinOS 9.x policy settings on Wyse Management Suite.
2. Click the Advanced tab and expand Network Configuration.
3. Click Wireless.
4. On the Global Wireless Settings page, click the Enable Captive Portal Detection toggle switch. Enabling this feature allows the ThinOS client to display the captive portal web page when you attempt to connect to WiFi.
5. In the Captive Portal Detection Interval Time field, specify the session timeout.
6. Click the Allow HTTP protocol redirection toggle switch if you want to use the HTTP protocol for redirecting to the captive portal web page.
7. Specify the captive portal detection URL. If the URL is not configured, the system default URL is used.
8. Restart your thin client for settings to take effect.
   NOTE:If your thin client is connected to a wired network, you must set the default gateway to WLAN0.