Linux Server Hardening: Security → Performance → Automation (Full Guide) скачать в хорошем качестве

Linux Server Hardening: Security → Performance → Automation (Full Guide)

🛡️ Linux System Administration: Complete Server Hardening & Automation ⚡ Why This Matters: 85% of breaches exploit basic security misconfigurations (IBM 2024) - these skills are mandatory for all SysAdmins! 💻 Today’s Comprehensive Lab: 1. OS Hardening Checklist: ```bash User Account Security sudo passwd -l unused_user # Lock unused accounts sudo userdel -r old_user # Remove obsolete users Service & Port Security sudo systemctl stop unused_service # Stop unnecessary services sudo netstat -tulnp # Check listening ports sudo firewall-cmd --list-all # Verify firewall rules SSH Hardening sudo vi /etc/ssh/sshd_config # Disable root login, change port 2. Performance Tuning: ```bash tuned profiles sudo tuned-adm list # List available profiles sudo tuned-adm recommend # Get recommended profile sudo tuned-adm profile throughput # Set performance profile Process priority nice -n 15 cpu_intensive_task # Start with low priority renice -n 10 -p 1234 # Change running process priority 3. Ansible Automation: ```bash Install Ansible sudo yum install ansible Basic inventory setup sudo vi /etc/ansible/hosts First playbook ansible all -m ping # Test connectivity 4. Network Diagnostics: ```bash tracepath example.com # Path discovery traceroute -I google.com # ICMP traceroute 🔥 Pro Tip: Use semanage port -l to view SELinux port contexts before changing service ports! 📥 How to setup OpenLDAP: https://kifarunix.com/install-and-set... 🔔 Subscribe for Linux, Hacking & Cybersecurity Tutorials! 🎬 FULL PLAYLIST:    • Linux Administration Course   #linuxadministrator #linuxhardening #ansible #selinux #sysadmin #devops