It provides a system tray icon in the notification area from which a non privileged user can establish and bring down L2TP over IPsec VPN connections.
There is also a 'Edit connections' menu item. In order to bring up the editor dialog, a non privileged user must authenticate as root.
From there the user can add, remove and edit vpn connections.
Editing allows configuring various options for IPsec, L2TP and PPP.
Among others, the user can configure eg. the gateway, the use of either...