This topic describes how to create identical security groups by means of cloning. Security groups can be cloned across regions and network types.
Prerequisites
If you want to clone a security group from the classic network to a virtual private cloud (VPC), at least one VPC is created in the destination region. For more information, see Create and manage a VPC.
Background information
You can clone a security group in the following scenarios:
- You have created a security group named SG1 in Region A and you want to apply the same rules as those of SG1 to instances in Region B. You can clone SG1 to Region B without the need to create a new security group.
- You have created a security group named SG2 in the classic network and you want to apply the same rules as those of SG2 to instances in a VPC. You can clone SG2 and select VPC as the network type for the clone security group in the Clone dialog box.
- You want to apply new security group rules to an ECS instance that is running an online application. You can clone the original security group for backup.