Describe the security measures and techniques covered in the RHCE course, including access controls, firewalls, and SELinux.

The RHCE course covers a range of security measures and techniques to ensure the protection and integrity of Red Hat Enterprise Linux (RHEL) systems. Let's explore the key areas addressed in the course: 1. Access Controls: * User and Group Management: Administrators learn how to create and manage user accounts and groups in RHEL. They understand the concepts of user and group permissions, password policies, and account management tools like passwd and usermod. * File and Directory Permissions: The course covers file and directory permissions, including ownership, read, write, and execute permissions. Administrators learn how to set appropriate permissions using chmod and chown commands to control access to sensitive files and directories. * Access Control Lists (ACLs): Administrators gain knowledge of ACLs, which provide more granular control over file and directory permissions. They learn how to set and manage ACLs using commands such as getfacl and setfacl. 2. Firewal....