Network Access Control Lists (NACLs)

Network Access Control Lists (NACLs) are security rules that act like a filter for network traffic entering and leaving a network. They specify which data packets are allowed or denied based on criteria such as IP addresses and ports. NACLs help protect the network by enforcing rules at the border of a network or subnet, ensuring only authorized traffic gets through. Think of them as gatekeepers that monitor and control the flow of information to prevent unwanted or harmful data from entering or leaving the network.