At the first logon to a Kaspersky NGFW device, you must change the default root password. Later you will be able to change this password using the Open Single Management Platform Console or on the command line.
To change a user password using the Open Single Management Platform Console, you need to create a task, Change account password (Linux only).
To change a user password on the command line, use the system password command from the system family of commands. For a description of command families for configuring Kaspersky NGFW, see the Managing Kaspersky NGFW using the command line document.