Module 1: Understanding the Role of Firewalls in Network Security
Lesson 1: Introduction to Network Security and Firewalls - The importance of network security in today's digital landscape - Defining firewalls and their role in securing networks - Brief history and evolution of firewall technology
Lesson 2: Types of Firewalls - Hardware vs. software firewalls - Network-based vs. host-based firewalls - Stateful vs. stateless firewalls - Application layer firewalls and proxy servers
Lesson 3: Firewall Principles and Packet Filtering - How firewalls examine and filter network traffic - Packet filtering based on source and destination addresses - Port-based filtering and protocol considerations - Advantages and limitations of packet filtering firewalls
Lesson 4: Firewall Policies and Rule Management - Crafting firewall policies to enforce security rules - Rule hierarchy and order of processing - Implementing allow, deny, and other rule actions - Rule testing and monitoring
Lesson 5: Firewall Deployment Scenarios - Perimeter vs. internal firewalls - DMZ (Demilitarized Zone) and its significance - Ingress and egress filtering - Challenges of cloud-based and distributed environments
Activity: Case Study Analysis - Analyzing real-world network breaches and their firewall-related issues - Identifying the impact of firewall misconfigurations on security incidents - Discussing best practices to prevent similar incidents
Module 1 Assignment: Quiz and Discussion - Quiz assessing understanding of firewall concepts - Online discussion on the role of firewalls in specific industries (e.g., finance, healthcare, e-commerce)
By completing Module 1, learners will have a solid understanding of the role of firewalls in network security, the different types of firewalls, their principles of operation, and their deployment scenarios. This foundation will prepare them for diving into the specifics of IP tables as a firewall management tool.