TP-Link TL-R600VPN Configuration Manual page 178

Configuring Authentication
2) In the Authentication Parameters section, configure the parameters of the
authentication page and choose the authentication type, then click Save.
Authentication
Page
Background
Picture
Welcome
Information
Copyright
Page Preview
Authentication
Type
Free
Authentication
Timeout
Choose the type of authentication page as Custom Page.
Note: External Links is not available for Onekey Online.
Click the Upload button to choose a local image as the background picture of
the custom authentication page.
Specify the welcome information to be displayed on the custom authentication
page.
Specify the copyright information to be displayed on the custom authentication
page.
Click the Login Page Preview button, and you can preview the customized
authentication page
Choose the authentication type as Onekey Online.
Specify the free duration for Onekey Online. When the free duration expired,
users can click "Onekey Online" button on the authentication page to continue
to visit the internet.
Onekey Online Configuration
Configuration Guide 170