A security group is a named container for security group rules. Security group rules provide Rackspace Public Cloud users the ability to specify the types of traffic that are allowed to pass through, to, and from ports (Public/ServiceNet) on a cloud server.
Security groups are available to all customers through the Cloud Control Panel.
Actions related to managing security groups are listed in Actions for Cloud Networks. You can read full details about API operations related to security groups in the Cloud Networks API documentation under Security groups operations.