Go to Vestige home page and choose your distribution
Web administration is accessible through the tray icon, and "Open web administration" button
Vestige installers create a tray icon which can be use to access web administration with your default navigator. The tray icon does not appear with gnome 3 but you can show it with the windows-M shortcut. This shortcut seems to not work on recent gnome 3 desktop, you have to install TopIcons Plus or Appindicator Support to see the tray icon.