Technical Tip: Redirect captive portal user to a custom URL after the successful authentication

Description

This article describes how to redirect a captive portal user to a custom URL after successful authentication.

Scope

FortiGate.

Solution

The following CLI commands explain how to redirect a captive portal user to a specific URL after successful authentication

Enable the 'auth-keepalive' option after the successful authentication, which enables the session to always redirect to a keep-alive page only, then manually select the 'new window' tab to open the custom page

In this scenario, it is necessary to disable the auth-keepalive page under the global settings to make this configuration effective.

To disable the auth-keepalive option:

config system global
    set auth-keepalive disable
end

config system interface
    edit <Interface_name>
        set security-redirect-url <Redirect_URL>
end

If the captive portal is enabled in a firewall policy instead of a LAN interface, then it is possible to add the redirection like below:

config firewall policy
    edit 1
        set redirect-url <Redirect_URL>

    next

end