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Step-By-Step: Configuring a site-to-site VPN Gateway between Azure and On-Premise

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Using site-to-site VPN gateway can provide better continuity for your workloads in hybrid cloud setup with Azure. This post will demonstrate how to set up site-to-site VPN Gateway to enable this.

Requirements 

Before start make sure you have following in place.

1) VPN device: A VPN device is needed on-premise to create the VPN connection with Azure. A list of supported list of devices can found here.

2) Static Public IP address: The VPN device should have external public IP address and it shouldn't be NAT.

3) Valid Azure Subscription

 

Create Virtual Network 

 

If you already have virtual network setup in your azure subscription, you will not need to do this step but make sure the settings are correct.

 

1) Log in to the azure portal.

2) Go to New > Networking > Virtual Network 

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3) Then click on create

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4) In next page, it will open up the wizard with the VNet information. In their fill the information to match with your configuration.

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Name: Name for the VNet

Address Space: IP range for the VNet. If you have multiple Address ranges, it can add later

Subnet name: Name for the subnet you like to add

Subnet Address range: Subnet IP range (it must be within the Address Space listed before)

Resource Group: Can create new group or select existing group

Location: location of the VNet

After that click on create to continue

5) Once VNet created, can modify the address ranges and subnets

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Create Gateway Subnet 

Next step is to create gateway subnet for the VNet. It is recommended to use /28 or /27 for gateway subnet. This need to be done before connecting VNet to the gateway.

1) Log in to the Azure Portal

2) Then go to More Services > Virtual Networks

 

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3) Then click on the VNet, created on previous step and click on subnets. Then click on gateway subnet 

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4) In the next window define the subnet for the gateway and click OK

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Create Virtual Network Gateway

Next step is to create virtual network gateway.

1) Log in to azure portal

2) Go to New > Networking > Virtual Network Gateway 

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3) In next window fill the relevant information and click on Create

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Name:   Name for the virtual network gateway

Gateway Type:   For our VPN it will be VPN

VPN Type:   Type of the VPN and regular VPN will be route-based

SKU: SKU for the VPN type

Virtual Network: Select the VNet you have created following previous step

Public IP Address: VPN need to have public IP address. Select public IP from here or if you don't have, once you click on the option it will allow you to add new one

Location: Select the correct region to match with VNet region

4) It can take up to 45 minutes to complete the task. Once it's done can see the public IP address details. You need this to configure the VPN device in yours on premises device

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Create Local Network Gateway

The next step is to create local gateway which represent your local network. To create it,

1) Log in to azure portal

2) Go to New > Networking > Local network gateway

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3) Then it will open new wizard and fill the relevant information. After that click on create to proceed

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Name: Name for the local gateway

IP Address: Public IP address to represent your VPN device. It should not behind NAT

Address Space: This is yours on premises address ranges. You can add multiple ranges.

Resource Group: Create new resource group or use the same one you were using

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Create Site-to-Site VPN

Then next step is to create Site-to-Site VPN connection between your VPN device and the virtual network gateway. To create it,

1) Log in to azure portal

2) Go to More Services > Virtual network gateways 

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3) Then click on the virtual network gateway you created and, under the settings tab, click on connection

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4) Then click on add

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5) In the wizard fill the relevant information and click ok.

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Name: Name of the connection

Connection Type: Type of the VPN. Most of the time its site-to-site

Virtual Network Gateway: Select the relevant virtual network gateway

Local Network Gateway: Select the relevant local network gateway for your connection

Shared Key: This is the pre-shared key you going to use for the VPN configuration

6) Once created its all about configuring the VPN in your VPN device

7) Once connected you can see the status in same page by clicking on connection 

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Comments

  • Anonymous
    June 28, 2017
    Thanks for the detailed step-by-step guide.
  • Anonymous
    July 02, 2017
    Thanks for this.
  • Anonymous
    July 10, 2017
    Hey ! thanks for the detailed step-by-step information.. Its really helpful.
  • Anonymous
    June 08, 2018
    Thanks fro detailed steps.
  • Anonymous
    June 08, 2018
    The comment has been removed