Azure Network Security Groups (NSGs) are a cloud-based network security solution that allow you to filter network traffic to and from Azure resources. They provide granular access control by allowing you to define inbound and outbound security rules based on source and destination IP addresses, ports, and protocols.
NSGs are applied to virtual networks and subnets, and can be associated with virtual machines, load balancers, and other Azure resources. They allow you to enforce network security policies and restrict traffic to only allow access to necessary resources.
Some common use cases for Azure NSGs include:
- Enforcing network security policies: NSGs can be used to control traffic flow to and from Azure resources, and to enforce security policies that restrict access to only necessary resources.
- Segmenting network traffic: NSGs can be used to segment traffic between different subnets in a virtual network, providing an additional layer of security.
- Controlling access to virtual machines: NSGs can be applied to virtual machines to restrict inbound and outbound traffic, and to control access to specific ports and protocols.
- Protecting Azure resources: NSGs can be used to protect Azure resources such as virtual machines, databases, and storage accounts from unauthorized access.
Overall, Azure NSGs provide a flexible and scalable network security solution for securing Azure resources and protecting them from potential threats.
