Help Center/ Relational Database Service/ User Guide (Ally Region)/ FAQs/ Database Connection/ Can I Access an RDS DB Instance Over an Intranet Connection Across Regions?
Updated on 2025-12-26 GMT+08:00
Can I Access an RDS DB Instance Over an Intranet Connection Across Regions?
By default, RDS DB instances cannot be accessed over an intranet across regions. Cloud services in different regions cannot communicate with each other over an intranet. You can use EIP, Cloud Connect (CC), or Virtual Private Network (VPN) to connect to RDS instances across regions.
- You can access RDS instances across regions using EIP.
- For RDS for MySQL instances, see Using MySQL CLI to Connect to an Instance Through a Public Network.
- For RDS for PostgreSQL instances, see Connecting to a DB Instance from a Linux ECS over a Public Network.
- For RDS for SQL Server instances, see Connecting to a DB Instance from a Windows Server.
- Cloud Connect allows you to connect two VPCs in the same account or in different accounts even if they are in different regions.
- VPN uses an encrypted tunnel to connect VPCs in different regions and sends traffic over the Internet. It is inexpensive, easy to configure, and easy to use. However, the quality of VPN connections depends on the quality of your Internet connection.
Parent topic: Database Connection
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