In this article, we will present a list of useful Linux security features and tools for system administrators. The list is not organized in any particular order.
1. ManageEngine Patch Manager Plus
2. Linux User and Group Management
3. Linux PAM
4. Server/Host-based Firewall
5. Linux SELinux
6. AppArmor
7. Fail2ban
8. ModSecurity Web Application Firewall (WAF)
9. Security Logs
10. OpenSSH
11. OpenSSL
12. Intrusion Detection System (IDS)
13. Linux Monitoring Tools
14. Linux VPN Tools
15. System and Data Backup and Restore Tools
16. Linux Data Encryption Tools
17. Lynis – Security Audit Tool
18. Nmap – Network Scanner
19. Wireshark
20. Nikto
21. Linux Update
