Azure Virtual Network (VNet) is the primary building block for your private network in Azure. VNet allows several types of Azure resources, including Azure Virtual Machines (VM), to securely connect with one another, the internet, and on-premises networks. VNet is similar to a traditional network in your own data center, but it includes extra Azure infrastructure features such as scale, availability, and isolation. Show
Table of Contents: Check out this Intellipaat Microsoft Azure Full Course video:Why use an Azure Virtual network?Azure virtual networks allow Azure resources to securely connect to the internet, and on-premises networks. A virtual network can be used to communicate Azure resources with the internet, communicate amongst Azure resources, communicate with on-premises resources, filter network traffic, route network traffic, and integrate with Azure services. Advantages of using Azure Virtual NetworkSeveral benefits of using the Azure virtual network are:
Want to read more about Azure? Go through this Azure Tutorial! Azure Vnet CapabilitiesBelow mentioned are the capabilities of Azure Vnet:
There are numerous features available within the Azure virtual network for traffic control:
Azure Virtual Network ArchitectureThe diagram above depicts a common virtual network design for n-tier application architecture. The entire virtual network has been divided into subnets based on workloads such as the web tier, which contains the user interface, the business tier, which operates the business logic, and the data tier, which hosts the data source. The idea of creating and binding each group of Virtual machines into a different subnet is important in that we can assign one Network Security Group (NSG) to each subnet and manage the traffic flows across the tiers. An HTTP request from the internet, for example, should not be sent immediately to the data tier subnet. We can assign an access policy to the Network Security Group of the Data Tier Subnet that only accepts inbound requests from the business tier subnet. Any additional requests made using a protocol other than the business tier and attempting to access the data tier will be rejected. Similarly, we can configure an access policy on the NSG of the business tier subnet so that the incoming request source IP address falls within the range of the web tier subnet. Furthermore, we can manage the traffic requests to Active Directory by placing them in a different Subnet within a Virtual Network. If you have any doubts or queries related to Azure, do post them on Azure Community! Azure Virtual Network limitsOnly networking resources managed by Azure Resource Manager per region per subscription are subject to the following limitations. ResourcesLimitVirtual network1,000Subnets per virtual network3,000Virtual network peerings per virtual network500VPN gateways per virtual network1DNS servers per virtual network20Private IP addresses per virtual network65,536Private IP address per network interface256Private IP address per virtual machine256PricingAzure provides a free Virtual Network. Each subscription allows for the creation of up to 50 Virtual Networks across all regions. VNET Peering connects two virtual networks, either in the same or different areas, and allows you to route traffic between them using private IP addresses (carry a nominal charge). At both ends of the peer networks, inbound and outgoing traffic is charged. Network equipment that run within a virtual network, such as VPN Gateway and Application Gateway, are also charged. Virtual network peering:Through virtual network peering, you can transport communication between virtual networks using private IP addresses. At both ends of the peer networks, ingress and egress traffic is charged. VNET Peering within the same regionInbound data transfer$0.01 per GBOutbound data transfer$0.01 per GBSummaryA virtual network is a collection of IP addresses linked together. It is an important factor to consider while developing cloud-based applications. To secure each layer of application architecture within a highly secured network, it is recommended to build different subnets for different tiers of an application and attach each subnet to a network security group with limited inbound and outbound security rules. In case you want to get certified and become an Azure Specialist, here is the course you are looking for Microsoft Azure Masters Program! What is the use of subnet in Azure?Subnets: Subnets enable you to segment the virtual network into one or more sub-networks and allocate a portion of the virtual network's address space to each subnet. You can then deploy Azure resources in a specific subnet.
What is virtual network and subnet in Azure?Virtual network and subnets. A subnet is a range of IP addresses in the virtual network. You can divide a virtual network into multiple subnets for organization and security. Each NIC in a VM is connected to one subnet in one virtual network.
What are some benefits of using a virtual machine on Azure?An Azure virtual machine gives you the flexibility of virtualization without having to buy and maintain the physical hardware that runs it. However, you still need to maintain the virtual machine by performing tasks, such as configuring, patching, and installing the software that runs on it.
What is the use of virtual network in Azure?Azure Virtual Network
Build an isolated, secure environment to run virtual machines (VMs) and applications. Optionally connect to on-premises datacentres for a hybrid infrastructure that you control. Bring your own IP addresses and DNS servers. Secure connections with an IPsec VPN or ExpressRoute.
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