Weblogin User Guide

How to log in

When the TUHH "Weblogin Service" service asks you to log in, enter your TUHH User ID and password. If they successfully match, the "Weblogin Service" will remember your identity for up to 8 hours. During this time, it will help you to log in to other protected websites without asking you to re-enter your User ID and password again and again - so be sure to log out when you are finished browsing.

How to log in, step by step:

1. When a TUHH website needs to know your identity, it automatically redirects you to the "Weblogin Service". The purpose of this trip is to authenticate who you are by requesting your User ID and password, which only you should know.

2. When you arrive at the "Weblogin Service" for the first time during a browsing session it displays a login page which asks you to log in with your User ID and password.

3. Before entering your User ID and password, always verify that the login page comes from the "Weblogin Service". The address should be https://cgi22.rz.tu-harburg.de/cgi-bin/login/index.cgi. This is the only website address you should trust with your password.

4. Enter your User ID and password as needed and click the "Log in" button. Make sure you enter your User ID using all lowercase characters and the correct password. The system is case-sensitive.

5. If login succeeds, the "Weblogin Service" automatically redirects you back to the initial TUHH website that needed to know your identity. It receives your User ID (but not your password) as proof of who you are and now can decide what to do with you.

6. If login fails, make sure your Caps Lock key is off and your Num Lock key is on. Then try again.

7. The next time a TUHH website needs to know your identity, the same process unfolds, beginning with another trip to the "Weblogin Service". However, this time you may not be asked to log in.

8. Namely, when you are redirected to the "Weblogin Service" a second or third time or more, it detects that you have already logged in, so you can be reauthenticated without having to enter your TUHH User ID and password again. This feature is known as "single sign-in" and the "Weblogin Service" abides by it most of the time. It reduces the number of times you have to log in during a single browsing session and simplifies how to log in to several websites over a short period of time.

9. The standard lifetime for this "single sign-in" period is 8 hours or until you log out, whichever comes first. During this period you may not notice return trips to the "Weblogin Service", although, if you watch closely, brief indications may show up in your browser's status bar.

10. To protect your privacy, remember to completely exit your browser when you are finished browsing. Exiting your browser deletes the "cookies" the "Weblogin Service" and other TUHH websites use to remember that you are logged in. To learn more, review how log out.