Linux Security

5. A distro of linux published by Canonical
7. Secure remote access service running on port 22 by default
8. A Linux utility designed to automate the rotation, compression, removal, and mailing of log files
9. The recording of a person's actions on a system (What did you do?)
13. Configuration file that defines sudo privileges for users
14. A linux file in etc that stores information about user's passwords
15. Displays active network connections and listening ports
17. Permission bit that runs a file with the group's privileges
19. Modifies user password expiration information
20. Network scanner used to discover hosts and open ports
21. Scheduler used to run commands or scripts at set intervals

1. A plain text file that defines the groups on the system and their members
2. The verification of a person's permissions (What can you do?)
3. A command used to run another command as the root user
4. A default linux user with the ID of 0
6. Command used to change file or directory ownership
9. The verification of a person's identity (Who are you?)
10. Cybersecurity strategy operating on the principle "never trust, always verify"
11. A linux file in etc that stores information about users on the system
12. Permission bit that runs a file with the owner's privileges
16. A software suite and init system used on most modern Linux distros
18. Command used to change file or directory permissions