A security group is a logical group that provides access policies for elastic cloud servers and DDS instances in the same VPC that have the same security protection requirements and trust each other.
To ensure the security and stability of the DDS, you must configure security group rules and open the IP address and port to access the database before using the DDS instance.
When a DDS instance is connected through the Internet, you must configure the inbound rule for the security group where the DDS resides.
Configuration Steps for Inbound Rules
Go to DDS > Management Console.
On the Instance Management page, select the specified target instance and click the instance name. The Basic Information page is displayed.
Choose Basic Information > Network > Security Group, click Edit, and select a security group.
Click the VPC name, go to the Network console, and choose Access Control > Security Group.
On the Security Group page, select the specified security group and click its name. The security group details page is displayed.
In the Inbound Rule tab, click Add Rule. The Add Inbound Rule window is displayed.
Configure the security group rules as instructed on the screen.
Click <b>OK</b>.