Привет!
Они через веб-интерфейс меняются. Вот выборка из документации:
Для Debug и обычных пользователей:
Заходим под администратором.
Choose System Settings > General > Personal.
Enable or disable Synchronize Account and Password.
If you enable Synchronize Account and Password, the password of the SSH and Telnet login account debug is changed accordingly when you change the password of a Debug user, and vice versa.
The Debug user name is debug by default, and the Normal user name is user by default. Neither can be changed.
If you disable Synchronize Account and Password, the password of the SSH and Telnet login account debug is not changed accordingly when you change the password of a Debug user, and vice versa.
To ensure account security, you are advised to change the password at the first login and regularly change the password afterward.
Click Save.
Для веб менеждмента и API доступа:
Choose System Settings > General > Personal.
Change the account password.
The password can contain 8 to 32 characters and must include at least two of the following: uppercase letter, lowercase letter, digit, and special character.
If you enable Synchronize Account and Password, the password of the SSH and Telnet login account debug is changed accordingly when you change the password of a debug user, and vice versa.
If you disable Synchronize Account and Password, the password of the SSH and Telnet login account debug is not changed accordingly when you change the password of a debug user, and vice versa.
Click Save.