Azure Virtual Private Network
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In this lesson, you will learn about Azure Virtual Private Networks (VPNs), their benefits, and how to configure them. Azure VPNs use encrypted tunnels to securely connect different networks, making it possible to safely share sensitive information across untrusted networks such as the internet.
Introduction to Azure Virtual Private Networks
A virtual private network (VPN) utilizes an encrypted tunnel within another network to securely connect two or more trusted private networks over an untrusted network, typically the public internet. This encryption prevents eavesdropping and other attacks, enabling networks to share sensitive information securely.
VPN Gateways
A VPN gateway is a type of virtual network gateway in Azure. These gateways are deployed in a dedicated subnet of the virtual network and enable the following types of connectivity:
All data transferred through these connections is encrypted inside a private tunnel as it crosses the internet. Each virtual network can have only one VPN gateway, but one gateway can connect to multiple locations, including other virtual networks and on-premises datacenters.
Types of VPN Gateways
When setting up a VPN gateway, you need to specify the type of VPN: policy-based or route-based.
Policy-Based VPN Gateways
Route-Based VPN Gateways
Connectivity Scenarios for Route-Based VPN Gateways
Use a route-based VPN gateway for:
High-Availability VPN Configurations
Ensuring high availability and fault tolerance for your VPN configuration is crucial. Azure provides several ways to maximize the resiliency of your VPN gateway:
Active/Standby Configuration
Active/Active Configuration
ExpressRoute Failover
Zone-Redundant Gateways
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