To learn more, see Network security groups or Application security groups. Network security groups: Network security groups and application security groups can contain multiple inbound and outbound security rules that enable you to filter traffic to and from resources by source and destination IP address, port, and protocol.You can filter network traffic between subnets using either or both of the following options: Azure ExpressRoute: Established between your network and Azure, through an ExpressRoute partner.The communication between your on-premises VPN device and an Azure VPN gateway is sent through an encrypted tunnel over the internet. This connection type enables any on-premises resource that you authorize to access a virtual network.
Site-to-site VPN: Established between your on-premises VPN device and an Azure VPN Gateway that is deployed in a virtual network.
The communication between your computer and a virtual network is sent through an encrypted tunnel over the internet. This connection type is great if you're just getting started with Azure, or for developers, because it requires little or no changes to your existing network. Each computer that wants to establish connectivity with a virtual network must configure its connection.
Point-to-site virtual private network (VPN): Established between a virtual network and a single computer in your network. You can connect your on-premises computers and networks to a virtual network using any of the following options: To learn more, see Virtual network peering. The virtual networks you connect can be in the same, or different, Azure regions. Through VNet Peering: You can connect virtual networks to each other, enabling resources in either virtual network to communicate with each other, using virtual network peering. To learn more, see Virtual network service endpoints overview. Service endpoints allow you to secure your critical Azure service resources to only a virtual network. Through a virtual network service endpoint: Extend your virtual network private address space and the identity of your virtual network to Azure service resources, such as Azure Storage accounts and Azure SQL Database, over a direct connection. To view a complete list of Azure resources that you can deploy into a virtual network, see Virtual network service integration. Through a virtual network: You can deploy VMs, and several other types of Azure resources to a virtual network, such as Azure App Service Environments, the Azure Kubernetes Service (AKS), and Azure Virtual Machine Scale Sets. Communicate between Azure resourcesĪzure resources communicate securely with each other in one of the following ways: When using only an internal Standard Load Balancer, outbound connectivity is not available until you define how you want outbound connections to work with an instance-level public IP or a public Load Balancer. To learn more about outbound connections in Azure, see Outbound connections, Public IP addresses, and Load Balancer. You can also use public IP or public Load Balancer to manage your outbound connections. You can communicate inbound to a resource by assigning a public IP address or a public Load Balancer. Communicate with the internetĪll resources in a VNet can communicate outbound to the internet, by default. Key scenarios that you can accomplish with a virtual network include - communication of Azure resources with the internet, communication between Azure resources, communication with on-premises resources, filtering network traffic, routing network traffic, and integration with Azure services. Why use an Azure Virtual network?Īzure virtual network enables Azure resources to securely communicate with each other, the internet, and on-premises networks. VNet is similar to a traditional network that you'd operate in your own data center, but brings with it additional benefits of Azure's infrastructure such as scale, availability, and isolation. VNet enables many types of Azure resources, such as Azure Virtual Machines (VM), to securely communicate with each other, the internet, and on-premises networks. Azure Virtual Network (VNet) is the fundamental building block for your private network in Azure.
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