Virtual Network
Create a logically isolated network on Azure cloud. Allows to securely connect it to on-premises data centers or a single machine using an IPsec connection.
- Does not cost anything
- Extend data center in the cloud
- Build distributed applications
- Remotely debug applications
Create Virtual Netowrk
- Need to add to a subscription, resource group assign a name, and region
- virtual network has a range of IP address, we need to specify a fixed range of IP address using CIDR notations.
- Virtual networks required a minimum of one subnet. a subnet is a division inside the IP address range.
Virtual network to virtual network connection
- Devices connected to one virtual network will not be able to connect with devices in another virtual network. There is no vnet to vnet connection by default.
- Communication can be possible via a network gateway. network gateway is a site-to-site VPN. It is a virtual device. It encrypts the traffic between vnets through a tunnel.
- Create a virtual network gateway
- Choose a subscription, region, gateway type (VPN| ExpressRoute), VPN type (route based | policy-based), sku, vnet, choose public IP address.
- Creation on virtual network gateways takes up to 45-60 min.
- Each virtual network will need a separate Virtual Network Gateway.
- Establish site to site connection between vnets
- Go to virtual network gateway --> Settings --> Connections --> Add
- Assign name, vnet 1 & vnet 2, IKE protocol (IKEv1 | IKEv2)
- shared key: used to establish encryption for the connection. Should be the same on both virtual networks.
- Pricing: based on the amount of time the gateway is provisioned and avaialable. data transfer inbound is free, outbound data transfer is chargable.
Virtual Network peering
- Go to virtual network --> Settings --> Peerings --> Add
- Assign name, subscription, another vnet for peering, traffic direction, and forwarding
- Peering is suitable for the cloud to cloud vnet connection.
- Charged only for outbound data transfer.
- Enable traffic farwording
- Save the cost of network gateway
- Quick and easy