Can I Deploy an Application on the Cloud and a Database in an On-premises Data Center and Connect Them Through a VPN?

Yes.

A VPN connects a VPC and an on-premises data center.

After a VPN is set up, service traffic can be transmitted between the VPC and on-premises data center. For an application server on the cloud, access to an on-premises database is logically the same as access to other hosts in the same LAN. Given this, it is feasible to use a VPN to connect an application on the cloud to a database in an on-premises data center.

This is a typical IPsec VPN scenario.

Additionally, there are no limitations on the service initiator. That is, service requests can be initiated from the cloud or the on-premises data center.

After a VPN is set up, check the network latency and packet loss rate to ensure smooth service running.
It is recommended that you run the ping command to check the packet loss and network latency details.

Parent topic: Networking and Application Scenarios

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