AWS VPC Network Security with Security Groups and NACLs

Securing cloud environments starts at the network level, yet misconfigured firewalls remain one of the primary causes of cloud security breaches. Understanding how to control inbound and outbound traffic is essential for protecting your cloud-hosted resources. This text-based course guides you through the core principles of network security, helping you move from basic concepts to building a secure, multi-layered defense system. You will learn how to design, implement, and audit network boundaries using native security features. What you'll learn: - Understand the fundamental architecture of an AWS Virtual Private Cloud (VPC) and its security boundaries. - Configure stateful Security Groups to control traffic at the individual resource and instance level. - Implement stateless Network Access Control Lists (NACLs) to secure subnets and block specific IP addresses. - Analyze the differences between stateful and stateless firewalls to design a robust defense-in-depth strategy. - Apply modern zero-trust network principles to minimize attack surfaces within your cloud architecture. - Enable and interpret VPC Flow Logs to monitor network traffic and troubleshoot connectivity issues. The course begins with foundational definitions of cloud networking and security layers before moving into step-by-step configurations. Through clear written scenarios and structured exercises, you will practice designing secure network patterns for real-world applications. This course is designed for aspiring cloud administrators, security enthusiasts, and beginners looking to establish a solid foundation in network security. No prior cloud security experience is required. Start reading today to build a secure foundation for your cloud infrastructure.