[ホワイトハッカーセミナー]Linuxのファイアウォール編

🎉 [ホワイトハッカーセミナー] Linuxのファイアウォール編 🛡️ ☠️ "Master Linux Firewall with firewalld on CentOS 7" 🐧✨

Course Overview:

Welcome to the "Master Linux Firewall with firewalld on CentOS 7" course, where you will dive deep into the world of Linux networking security using one of the most robust and user-friendly firewall tools available – firewalld. This course is designed for system administrators, IT professionals, and cybersecurity enthusiasts who want to master packet filtering with real-world applications.

What You'll Learn:

Introduction to Linux Firewall:

• Understanding the Difference: Learn the distinction between traditional iptables and the higher-level firewalld service.
• Firewalld Environment Setup: Get hands-on with default zones and understand the concept of zones in firewalld.

Practical Packet Filtering:

• HTTP/SSH Filtering: Master the art of filtering packets for HTTP and SSH services, which are commonly targeted by attackers.
• Service Management: Discover how to manage and control services using firewalld with service definition files (XML format).
• Port Filtering: Learn to effectively filter packets based on port numbers and ensure your services run smoothly and securely.

Advanced Firewalld Configuration:

• ICMP Request Management: Gain the ability to control pinging and other ICMP traffic, which is crucial for maintaining the integrity of your system.
• Scenario-Based Learning: Apply your knowledge in real-world scenarios that mimic various network conditions and threats.

Final Project:

• Putting It All Together: Engage in a final project that will require you to set up a firewalld configuration tailored to a specific network scenario. This hands-on project will test your understanding and ability to apply the concepts learned throughout the course.

Course Structure:

1. Understanding Firewalld:

   • What is Firewalld?
   • Why use Firewalld over iptables?
   • An overview of the default zones in Firewalld.

2. Service Management with firewalld:

   • How to enable and disable services.
   • Filtering HTTP/SSH traffic using firewalld.
   • Utilizing service definition files (XML) for better management.

3. Port-Based Filtering:

   • How to filter packets based on specific port numbers.
   • Setting up persistent rules using firewalld-config tool.

4. ICMP Management:

   • Controlling ICMP requests and responses.
   • Understanding the implications of ICMP traffic on network security.

5. Scenario-Driven Exercises:

   • Implementing firewalld settings in various network scenarios.
   • Troubleshooting common issues with firewalld configurations.

Why Take This Course?

By the end of this course, you will have a comprehensive understanding of how to secure your Linux servers using firewalld. You will be able to:

• Confidently set up and manage firewall rules.
• Understand the difference between various firewall tools and when to use them.
• Protect your services from unauthorized access.
• Respond effectively to network threats.

Join us on this journey to become a Linux firewall expert. Enroll in "Master Linux Firewall with firewalld on CentOS 7" today and secure your Linux systems like a pro! 🎓🛡️