Do not use your IDM password here. From your dormitory room, you will be logged in automatically. You can then set a password which you can use to log in from outside the dorm (e.g. through eduroam). If you have not yet set a password from your dorm room, you cannot use this site.
If you do not use the HaWo network but still want to use other services (e.g. washing registration) you can e-mail us to get an account: