Authenticating With Captive Portal; Logging Into The Network With Captive Portal - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Configuring Access Guardian

Authenticating with Captive Portal

Access Guardian determines that a client device is a candidate for Web-based authentication if the follow-
ing conditions are true:
•
The device is connected to an 802.1x-enabled port.
•
An Access Guardian policy (supplicant or non-supplicant) that includes the Captive Portal option is
configured for the port.
•
The device is not classified for VLAN assignment by any other policy or method configured for the
port. For example, if a policy specifies Group Mobility and Captive Portal but device frames do not
match any Group Mobility rules, then Access Guardian invokes Captive Portal authentication.
When all of the above conditions are met, Access Guardian places the device MAC address in a Captive
Portal state. This means that the switch will not learn the device MAC address and a Web browser session
is required to proceed with the authentication process.
Note. Captive Portal does not require the configuration of IP interfaces, a UDP Relay agent, or an exter-
nal DHCP server to provide an IP address for the client device. A temporary IP address derived from the
Captive Portal subnet is assigned to the client for use during the authentication process. For more informa-
tion, see "Configuring Captive Portal Authentication" on page

Logging Into the Network with Captive Portal

Once a user device is in the Captive Portal state, the following steps are required to complete the authenti-
cation process:
1
Open a Web browser window on the client device. If there is a default home page, the browser will
attempt to connect to that URL. If a default home page is not available, enter a URL for any website and
attempt to connect to that site. Note that the specified URL must contain the "http", "https", or "www"
prefix (see "Configuring Captive Portal Authentication" on page 34-32
A certificate warning message may appear when the Web browser window opens. If so, select the option
to continue on to the website. For example, Windows IE7 browser displays the following message:
OmniSwitch AOS Release 6 Network Configuration Guide
Configuring Captive Portal Authentication
34-32,
for more information).
September 2009 page 34-35