Access the login screen as described in the section Agent web interface . Enter a user name and password. Since the system has just been installed and no users have yet been created, login as OTRS administrator first, using 'root@localhost' for username and the generated password in the last step of the installer.
This account data is valid on every newly installed OTRS system. You should change the password for the OTRS administrator as soon as possible! This can be done via the preferences screen for the OTRS administrator account.
If you don't want to login as OTRS administrator, just enter the username and password for your normal agent account.
In case you have forgotten your password, you can request the system for a new password. Simply press the link below the Login button, enter the username that is registered for your OTRS account into the input field, and press the Request New Password button (see figure).