What Are the Typical Scenarios of IPsec VPN?

A VPN is a point-to-point connection that implements private network access between two points.

• Applicable scenarios:
  • A VPN is created between different regions to enable cross-region VPC communications.
  • A VPN is created between VPCs and another public cloud, for example, Alibaba Cloud.
  • A VPN is created between a VPC and your on-premises data center.
  • A VPN hub is used together with VPC peering connections and Cloud Connect connections to enable communications between an on-premises data center and multiple VPCs on the cloud.
  • A VPN is used together with source NAT to enable access to specific IP addresses across clouds.
• Not applicable scenarios:
  • A VPN cannot be used to connect VPCs in the same region. It is recommended that you use VPC peering connections to enable communications between VPCs in the same region.
  • A VPN cannot be used between the cloud and your home network that uses PPPoE dial-up.
  • A VPN cannot be used between the cloud and 4G/5G routers.
  • A VPN cannot be used between the cloud and your personal terminals.