By default, buildroot will generate images with user accounting enabled. To access the board via a command line (serial line or telnet for example), a username and a password has to be supplied. In the default configuration the following users are created:
- default as a normal user
- root as a system administrator
The passwords for both accounts are empty. Logging in remotely permits a direct root-login most of the time. In this case, log in as default and execute su to gain superuser privileges. To create a password for a user, simply execute passwd on the target. This application will ask the user to enter a new password and change it afterwards.