General availability: VPN over ExpressRoute private peering
Published date: 16 November, 2020
For customers such as those in financial and health industries, double encryption over both their private WANs and Azure WAN is a key compliance requirement. VPN over ExpressRoute private peering allows customers to use IPsec tunnels over their ExpressRoute private peering to satisfy this need.
You can configure a site-to-site VPN to a virtual network gateway over an ExpressRoute private peering using an RFC 1918 IP address. This configuration provides the following benefits:
Traffic over private peering is encrypted.
Point-to-site users connecting to a virtual network gateway can use ExpressRoute (via the site-to-site tunnel) to access on-premises resources.
Use this link for more information