How to create Azure Network Security Group

Creating a network security group

From the upper search pane, write "Network Security Groups" -> click on "Create network security group" or "Add":

Click on Create
Wait for the deployment on the new network security group to complete
From the "Network Security Groups" window, click on the newly created network security group
From the main pane, click on Tags -> add a new tag:

Click on Save
From the main pane, click on Inbound security rules -> click on Add -> use the example below in-order to create an inbound rule:

Source: Select IP Address
Source IP addresses/CIDR ranges: Specify here a static public IP address or your organization public address/CIDR
Source port ranges: Leave the default
Destination: Select IP Addresses
Destination IP addresses/CIDR ranges: Specify here public IP address of an Azure Virtual machine
Destination port ranges: Specify here 22
Protocol: TCP
Action: Allow
Priority: Leave the default settings
Name: Specify here a description for the new rule (for example: Inbound SSH access)

Click on Add
For more information about creation of inbound or outbound rules, see: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/nsg-quickstart-portal
From the main pane, click on Network interfaces -> click on Associate -> select an existing network interface from the list
Click on OK
From the main pane, click on Subnets -> click on Associate -> select an existing subnet from the list
Click on OK
Logoff the Microsoft Azure Portal