Implementing and Managing Azure Network

Important Terms

1. Virtual Network (VNET)

An Azure Virtual Network (VNet) is a representation of your own network in the cloud. It is a logical isolation of the Azure cloud dedicated to your subscription.

2. Subnet

A subnetwork or subnet is a logical subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting. Computers that belong to a subnet are addressed with an identical most-significant bit-group in their IP addresses.

3. Private IP Address

A private IP address is a non-Internet facing IP address on an internal network. Private IP addresses are provided by network devices, such as routers, using network address translation (NAT).

4. Public IP Address

A public IP address is an IP address that can be accessed over the Internet. Like postal address used to deliver a postal mail to your home, a public IP address is the globally unique IP address assigned to a computing device. Your public IP address can be found at ‘show my IP Address’ search on google.

5. Network Security Group (NSG)

A network security group (NSG) is a networking filter (firewall) containing a list of security rules allowing or denying network traffic to resources connected to Azure VNets. These rules can manage both inbound and outbound traffic.

Implementing and Managing Azure Network

Demo 1: Designing VNET and subnet

Step 1: In the Portal, Go to: + New > Networking > Click on Virtual Network: 

Step 2: In the Virtual Network blade, fill the details as shown below and Click Create:

Step 3: Once deployed, an overview window of your VNet will be displayed. There click on the subnets option at the left side:

Step 4: Once you click on the + Subnet, configure the subnet as shown below:

Step 5: Once you click on the + Subnet, configure the subnet as shown below:

Step 6: You can now find the two subnets.

Demo 2: Configure Static and Dynamic Public IP Addresses

Step 1: In the Portal, go to: + Create a resource - > Search for Public IP Address > Click on Create:

Step 2: Once you click Create, configure the Public IP address as shown below on the blade:

 

Demo 3: Design User-Defined Routes (UDRs)

Step 1: In the Portal, go to: + New > Networking > Route Table: 

Step 2: In the New Route Table blade, fill the Subscription, Resource Group and Location details:

Step 3: In the Route Table window, Select Subnets just like you did for NSG > Select the desired Subnet > Click OK:

Step 4: In the Route Table window, Select the Routes option in the menu > Click on + Add > Configure > Click OK:

Demo 4: Setting up Network Security Groups (NSGs)

Step 1: In the Portal, go to: +New > Networking > Click on Networking Security Group

Step 2: Once you click on NSG, add the NSG to a Resource Group as shown below and click Create:

 

Step 3: In the NSG window, Select Subnets in the menu > Click on +Associate to select a subnet:

 

Step 4: In the +Associate blade, Select Virtual Network in which the Subnet is present > Click on desired Subnet > OK:

Step 5: Once you associate the Subnet, click on the Inbound Rules in the menu to configure them. To create an Inbound Security rule specifically for the HTTP traffic, click on +Add in Inbound Security rules blade:

Step 7: Once you click +Add, configure the rule as shown below:

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