Contents
Overview of Azure Virtual Network
Steps to Creating Azure Virtual Network
Overview of Azure Virtual Network
Azure Virtual Network (VNet) is a versatile and powerful service that provides flexibility, security, and scalability required to support a wide range of applications and workloads in the cloud. It enable users to securely connect Azure resources to each other, to the internet, and to on-premises networks. It serves as the backbone for networking within the Azure ecosystem, offering a range of features and capabilities that facilitate secure and efficient communication.
Key Features and Capabilities
Isolation and Segmentation: VNets provide logical isolation within the Azure environment, allowing users to create multiple isolated networks. Each VNet is isolated from other VNets, providing a secure environment for deploying resources.
Subnets: A subnet or subnetwork is a network inside a network. VNets can be divided into subnets to enable better organization and management of resources. Subnets can also be used to apply network security policies and route network traffic.
Network Security Groups (NSGs): NSGs allow users to control inbound and outbound traffic to and from network interfaces, VMs, and subnets. They act as virtual firewalls, providing granular control over network traffic.
Azure Firewall: A managed, cloud-based network security service that protects Azure Virtual Network resources. It allows users to define, enforce, and log application and network connectivity policies.
VPN Gateway: This service enables secure cross-premises connectivity between the VNet and on-premises infrastructure through a secure VPN tunnel. It supports both site-to-site and point-to-site configurations.
ExpressRoute: Provides a dedicated, private connection between Azure datacenters and on-premises infrastructure or colocation environments. It offers higher security, reliability, and faster speeds compared to typical internet connections.
Peering: VNet peering allows VNets to communicate with each other directly through the Azure backbone network, enabling low-latency, high-bandwidth connectivity between VNets in the same region or across regions.
Load Balancing: Azure Load Balancer and Application Gateway provide scalable and high-availability network services. They distribute incoming network traffic across multiple servers to ensure reliability and optimal performance.
DNS Services: Azure DNS hosts domain names and resolves DNS queries using Microsoft’s global network of name servers, ensuring high performance and availability.
DDoS Protection: Azure DDoS Protection safeguards applications by scrubbing traffic at the Azure network edge before it can affect service availability.
Use Cases
- Hybrid Cloud Deployments: Securely extend on-premises networks to Azure, enabling a hybrid cloud environment that leverages the benefits of both on-premises and cloud resources.
Multi-Tier Applications: Deploy multi-tier applications with isolated network environments for different tiers (e.g., web, application, and database tiers) to enhance security and manageability.
Disaster Recovery: Utilize VNets for disaster recovery setups, ensuring that critical applications and data can be quickly recovered in the event of a failure.
Big Data and Analytics: Deploy big data and analytics solutions, connecting various services and resources securely within the VNet for efficient data processing and analysis.
Steps to Creating Azure Virtual Network
This guide will create an Azure virtual network with four subnets using the address space 192.148.30.0/26 for company XYZ. The four chosen subnets represent four departments in the company which are ICT, Sales, Audit, and Account. Below is a step-by-step guide:
Step 1: Log in to the Azure Portal
On your web browser, type portal.azure.com to go to the Azure Portal login page.
Log in with your Azure account credentials or click here to create a free one if you do not have an account yet.
Step 2: Create a Virtual Network
- On the Azure Portal search bar, type Virtual Network and select Virtual Network from the list.
- click Create.
Step 3: Configure the Virtual Network Basics
In the Basics tab, fill in the following details:
Subscription: Select the subscription to use.
Resource group: Create a new resource group or select an existing one.
Name: Enter a name for the VNet (example: XYZ-VNet).
Region: Select the region where you want to create the VNet.
Step 4: Configure the Address Space
- Click on the IP Addresses tab.
- Under IPv4 address space,
- Enter 192.148.30.0 in the Address space field and select /26 on the CIDR field then delete the default subnet created and add your subnets.
Step 5: Add Subnets
add four subnets for ICT, Sale, Audit and Account department
For ICT Subnet:
Under the Subnets section of the address space,
- click on + Add subnet. On the Add subnet screen,
- enter or select values for the subnet settings. Enter the following details for example:
- Subnet name: ICT
- Starting address: 192.148.30.0
- size: select /28
- Click Add
For sales Subnet:
- click on + Add subnet
- Subnet name: sales
- starting address: 192.148.30.16
- Size:/28
- Click Add Do the same for the other two subnets with the following details:
For Audit Subnet:
- Subnet name: Audit
- starting address: 192.148.30.32
- Size:/28
- Click Add
For account Subnet:
Subnet name: Account
- starting address : 192.148.30.48
- Size:/28
- Click Add
Step 6: Review and Create the VNet
Once all subnets are added,
- click on the Review + create button at the bottom of the page.
- Review the settings to ensure everything is configured correctly.
- Click Create to deploy the Virtual Network.
Step 7: Verify the Deployment
- After the deployment is complete, click Go to resource to see the overview.
Ensure that the subnets are created with the correct address ranges.
On the left pane, click setting
select subnets
By the way, if this is for practice only, endeavor to delete the virtual network after creating to avoid unnecessary costs.
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