3.1.1. Open the Amazon VPC console at https://console.aws.amazon.com/vpc/.
3.1.2. In the navigation pane, choose Security Groups.
3.1.3. Choose Create security group.
3.1.4. For the Security group name and Description type
immersion-day-db. For VPC select your VPC ID My VPC, and choose Create security group.
3.1.5. For you security group immersion-day-db, choose Edit inbound rules.
3.1.6. In the dialog, choose Add Rule, add the following rules and Choose Save rules:
sg-and select the security group ID for Web Tier