The platform enables you to create site-to-site VPNs between virtual datacenters and other virtual datacenters or other entities.

This feature is available in datacenters using VMware with NSX-NAT or NSX-gateway.

To manage VPNs, go to Virtual datacenters → select a virtual datacenter → Network → VPN

Initial support for VPNs is per VDC, which means you need to create a separate VPN site for each connected virtual datacenter. Both sites of a VPN must have the same encryption and authentication settings, and inverse local and remote network configurations.

The following table describes VPN functionality in the providers.

	AWS	VMware NSX	Azure
Encryption	AES	AES, AES256, Triple DES, AES-GCM	AES128_SHA1, AES128_SHA256, AES256_SHA1, AES256_SHA256, _3DES_SHA1, _3DES_SHA256
Perfect forward secrecy enabled	always enabled	optional	always disabled
DH group	DH2	DH2, DH5, DH14	DH2, DH14
Authentication	PSK (mandatory)	PSK (mandatory)	PSK (mandatory)

To connect private cloud with public cloud, define the VPN site in private cloud first.

In Azure you can create a VPN using a dummy address for the local gateway (site 1) and edit it after you create the Azure VPN site
Azure may automatically select a compatible encryption type
In AWS you must supply the IP address of site 1 and you cannot edit it, so you must create site 1 first and the VPN site in AWS will always be site 2

To create the VPN site for site1:

Go to Virtual datacenters → select a virtual datacenter → Network → VPN
Click the + add button and enter the VPN details

The platform will create the VPN site.

For more details see GUI Create a VPN

To create the VPN site for site2 in another VDC:

Select the Virtual datacenter
Add another VPN site using the same encryption and authentication settings, and the remote network configuration of the first VPN site as the local values.

After you have created both VPN sites, on the VPNs tab, to check the connection in the network virtualization system, click the Check link in the VPN Status column, or when you edit a VPN site.

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