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Tuần 1: Hiểu biết Cơ bản về Linux

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Day 1: Linux Distributions & Basic Navigation
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Linux distribution overview and selection
Command line basics (ls, cd, pwd, etc.)
File viewing commands (cat, less, head, tail)
Getting help (man, --help)
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Day 2: User Management
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Creating and managing users
Group management
Setting passwords and user properties
Understanding /etc/passwd and /etc/shadow
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Day 3: File Permissions & Ownership
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Understanding permission structure (rwx)
Changing permissions with chmod
Changing ownership with chown
Special permissions (SUID, SGID, sticky bit)
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Day 4: Package Management
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Học cách quản lý, cài đặt phần mềm, dịch vụ
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Day 5: Service Management with systemd
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Starting, stopping, and restarting services
Enabling services at boot
Checking service status
Viewing service logs

Tuần 2: Networking & Security

Day 6: SSH & Remote Access
SSH connection basics
SSH key authentication
SSH configuration and hardening
SCP for file transfers
Day 7: Network Configuration
Understanding network interfaces
IP addressing and subnet basics
Configuring network settings
Basic troubleshooting tools
Day 8: Firewall Management
UFW on Ubuntu
firewalld on RHEL/CentOS
Common configurations
Testing and validating rules
Day 9: Basic Security Hardening
Initial server hardening checklist
Fail2ban for brute force protection
Automatic security updates
Best practices for server security
Day 10: System Monitoring Basics
Checking system resources (top, htop)
Disk usage monitoring
Log monitoring basics
Simple monitoring tools
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Tuần 3: Web Server & SSL

Day 11: Nginx Installation & Basic Configuration
Installing Nginx
Basic configuration
Hosting a simple website
Server blocks (virtual hosts)
Day 12: SSL Concepts & Implementation
Understanding SSL/TLS
Certificate types and authorities
Creating self-signed certificates
Obtaining Let's Encrypt certificates
Day 13: Configuring HTTPS with Nginx
Implementing SSL in Nginx
SSL certificate installation
SSL configuration best practices
Testing SSL implementation
Day 14: Advanced SSL & Security
Choosing secure cipher suites
Perfect forward secrecy
Security headers (HSTS, CSP)
SSL testing and grading tools
Day 15: Caching Fundamentals
Caching concepts and benefits
Browser caching with headers
Nginx caching configuration
Cache invalidation strategies

Week 4: Advanced Topics & Monitoring

Day 16: Server Backup Strategies
File backup techniques
Database backups
Automation with cron
Backup storage and rotation
Day 17: Log Management
Understanding system logs
Log rotation and management
Basic log analysis
Centralized logging concepts
Day 18: Monitoring Setup
Monitoring requirements
Simple monitoring tools overview
Setting up basic monitoring
Alert configuration
Day 19: Datadog Installation & Configuration
Datadog account setup
Agent installation
Basic configuration
Integration options
Day 20: Datadog Dashboards & Alerts
Creating custom dashboards
Key metrics to monitor
Setting up meaningful alerts
Using monitoring data for optimization
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