Azure Network Security Group
Azure Network Security Group (NSG) is a cloud-based security service in Microsoft Azure that acts as a virtual firewall to control inbound and outbound network traffic to Azure resources, such as virtual machines and subnets. It uses rules based on source/destination IP addresses, ports, and protocols to filter traffic, providing network-level security for Azure virtual networks.
Developers should learn Azure NSG when building secure cloud applications on Azure, as it is essential for implementing network segmentation, protecting against unauthorized access, and meeting compliance requirements. It is commonly used in scenarios like securing web applications, isolating development environments, and managing traffic flow in hybrid cloud setups.