Connecting an On-Premises Data Center to the Internet Using Direct Connect and NAT Gateway

You can use Direct Connect to connect your on-premises data center to the cloud and then buy a public NAT gateway to allow on-premises servers to access the Internet or provide publicly accessible services. Use SNAT rules to allow on-premises servers to send outbound traffic to the Internet, while preventing the Internet from establishing connections to the servers. Use DNAT rules to allow a service in the on-premises network to be publicly accessible. This is widely used in scenarios such as gaming, e-commerce, and finance.

For details, see Using SNAT and DNAT Rules to Enable Inter-Cloud High-Speed Internet Access.