Dell PowerConnect M6348 Configuration Manual page 120

Client Authentication Logout Request
The administrator can configure and enable 'user logout'. This feature allows the authenticated client to
deauthenticate from the network.
In response to the request, the authenticated user is removed from the connection status tables. If the
client logout request feature is not enabled, or the user does not specifically request logout, the
connection status remains authenticiated until Captive Portal deauthenticates (session timeout, idle
time, etc.). In order for user logout to function properly, the client browser must be configured such that
Javascript is enabled and popup windows are allowed.
Web Page Customization
Captive Portal provides a web interface to create and customize a specific web page for each Captive
Portal configuration. This is accomplished by providing text input components that accept Unicode
literal characters.
NOTE:
Customization of locale web pages is accomplished using the Web UI (locale customization is not available
using CLI).
The following is an example that shows Unicode input.
Figure 5-6. PowerConnect M6220/M6348/M8024 Switches with TACACS+
The administrator can download and configure image files for branding purposes. Each image must first
be copied onto the switch; Captive Portal provides a HTTP file browser component for this purpose. GIF
(Graphics Interchange Format) and/or JPEG (Joint Photographic Experts Group) file types are
supported. Once an image file is copied to the switch it can be selected from a drop down list and
associated with a locale specific web page configuration.
The verification method is part of the captive portal configuration, therefore the locale specific web
pages for any given configuration are of the same verification type (Guest, Local, or RADIUS).
The authentication server generates user verification pages upon receipt of a specific URL request. The
URL provides an interface identifier that links to the locale-specific data in the Captive Portal
configuration. The authentication server reads the associated locale-specific data to construct and serve
the appropriate web page.
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Device Security