Azure policy network security group

1. What is Azure Policy network security Group rule?
2. What is nsg vs asg vs firewall?
3. How many security rules can be included in a network security group?

What is Azure Policy network security Group rule?

A network security group contains security rules that allow or deny inbound network traffic to, or outbound network traffic from, several types of Azure resources. For each rule, you can specify source and destination, port, and protocol.

What is nsg vs asg vs firewall?

ASGs are used to protect groups of servers with a common function, such as web servers or database servers. An NSG works much like a firewall. While an Azure Firewall monitors traffic at more of a global level, an NSG is more defined and is applied to specific subnets and/or network interfaces.

How many security rules can be included in a network security group?

To make the VM secure and also available to other hosts inside the Vnet Azure has designed every NSG to have 3 default rules that allow internal connectivity but also protection from external sources.