Description

This operation allows you to create a security group. You can configure the firewall for a group of instances by configuring security group firewall rules. One security group can contain multiple instances. When creating a security group, consider the following:

• For a newly created security group, only the access permission for instances inside the same group is enabled, access permissions to others are disabled. If you permit access from instances in other groups or from the Internet, use the interface for granting security group permissions to modify the security group firewall rules.
• Firewall rules are differentiated between the intranet and internet.
• Up to 100 security groups can be created for one user.
• VpcId must be specified before a VPC security group is created.

Request parameters

Return parameters

Error code

Examples

Request example

https://ecs.aliyuncs.com/?Action=CreateSecurityGroup
&RegionId=cn-hangzhou
&Description=for_demo
&<Public Request Parameters>

Return example

XML format

<CreateSecurityGroupResponse>
    <RequestId>CEF72CEB-54B6-4AE8-B225-F876FF7BA984</RequestId>
    <SecurityGroupId>sg-F876FF7BA</SecurityGroupId>
</CreateSecurityGroupResponse>

JSON format

{
    "RequestId":"CEF72CEB-54B6-4AE8-B225-F876FF7BA984",
    "SecurityGroupId":"sg-F876FF7BA"
}