Explore the fundamentals of firewall rules in this comprehensive 46-minute video tutorial. Learn how to structure and maintain firewall rules effectively, making it easier to manage access and prevent unintended security breaches. Discover the importance of creating sections for improved rule handling, and understand how to set up different rules for internal servers and Internet access. Gain insights into configuring external-facing rules and considerations for self-hosting computers on the Internet. Delve into managing rules for external firewalls and grasp the concept of stateful firewalls, including why bi-directional rules don't always require separate client and server configurations. Enhance your IT security knowledge with practical examples and best practices for implementing robust firewall protection.