In the process of constructing your Hybrid Hub and Spoke Network within the Cloud, which includes the integration of On-Premises networks and allows internet-based access, the implementation of a network firewall is essential for robust security. This security measure involves thorough traffic analysis and filtering between the entities to safeguard against both internal and external cyber threats and exploits. By actively monitoring and inspecting the flow of traffic, a network firewall plays a crucial role in identifying and blocking vulnerability exploits and unauthorized access attempts. Within the AWS ecosystem, the AWS Network Firewall is a service that is often used for achieving a high level of network security. As a stateful and fully managed network firewall, it includes intrusion detection and prevention capabilities, offering comprehensive protection for VPC-based network traffic. This blog post aims to guide you through the process of integrating the AWS Network Firewall into your hybrid AWS Hub and Spoke network. By doing so, you can effectively analyze, monitor, and filter both incoming and outgoing network traffic among all involved parties, thereby enhancing the overall security of your infrastructure layer.