Azure Network Security Groups | how it works | 20 mins
In this tutorial you will learn
How network security groups filter network traffic
How Application security groups works and its purpose.
How to Add Inbound rules in NSG
How to Add Outbound rules in NSG
Network security is used to filter network traffic to and from Azure resources in an Azure virtual network.It contains security rules that allow or deny inbound network traffic / outbound network traffic ,For each rule, you can specify source and destination, port, and protocol.
network security group and its characteristics
1. Network security group security rules are evaluated by priority
2. network security group are stateful.
3. If inbound traffic is allowed over a port, it's not necessary to specify an outbound security rule
4.Existing connections may not be interrupted when you remove a security rule that enabled the flow.
Application Security group
Application security groups enable you to configure network security as a natural extension of an application's structure, allowing you to group virtual machines and define network security policies based on those groups. You can reuse your security policy at scale without manual maintenance of explicit IP addresses.
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