Red Hat Certified System Administrator (EX200) Cert Prep: 2 File Access, Storage, and Security

Introduction

• Prepare for the RHCSA EX200 Exam
• About Red Hat Certifications
• What was covered in part 1
• Lab setup

• Create and delete local user accounts
• Modify local user accounts
• Change passwords and adjust password aging for local user accounts
• Manage aging for local user accounts
• Create, delete, and modify local groups and group memberships
• Log in and switch users in multiuser targets
• Elevating privileges using sudo
• Challenge: Users and accounts
• Solution: Users and accounts

• File and directory modes
• Change file and directory ownership
• Set permissions using numeric mode
• Set permissions using symbolic mode
• Initial permissions using umask
• Special file bits: SUID and SGID
• Special directory bits: SGID and Sticky
• Read access control lists
• Set access control lists (ACLs)
• Configure inheritance with default access control lists
• Delete access control lists
• Challenge: File access control
• Solution: File access control

• Set enforcing and permissive modes for SELinux
• List and identify SELinux file and process context
• Restore SELinux default file contexts
• Use Booleans to modify SELinux behavior
• Diagnose routine SELinux policy violations
• Maintain security context when managing files
• Manage firewalls with firewalld
• Challenge: Manage security
• Solution: Manage security

• Configure Secure Shell
• Configure key-based authentication for SSH
• Securely transfer files between systems
• Access Linux from Windows using PuTTY
• Access Linux from macOS or Linux using SSH
• Access Linux from iOS using SSH
• Access Linux from Android using SSH

• List, create, and delete partitions on MBR and GPT disks
• Manage LVM volumes and volume groups
• Mount file systems at boot
• Mount file systems at boot by ID or label
• Extend existing logical volumes
• Mount and unmount CIFS and NFS network file systems
• Challenge: Local storage
• Solution: Local storage

• Next steps