To create a security group, perform the following steps.

Click on the Create Security Group button in the upper right-hand corner of the screen. A window will appear that will allow you to create a security group, which is similar to the following screenshot:

Figure 6.14

The Name field is required. When you are ready to proceed, click on the blue Create Security Group button to create the security group.

Once created, you will be returned to the Access & Security section, where you can add rules to the security group by clicking on the Manage Rules button of the corresponding group:

Figure 6.15

To delete a rule, click on the red Delete Rule button next to the corresponding security group rule. To add a rule, click on the Add Rule button in the upper right-hand corner:

Figure 6.16

A window will appear that allows you to create rules. Within the rule list, you can choose from a predefined list of protocols or create a custom rule, as follows:

Figure 6.17

To complete the rule creation, click on the blue Add button.

To apply a security group to an instance, return to the Instances section of the Compute tab. Click on the arrow under the Actions menu next to the instance and select Edit Security Groups:

Figure 6.18

A window will appear that allows you to apply or remove security groups from an instance.

Hit the blue plus sign next to the group to apply it to an instance:

Figure 6.19

Once clicked, the group will move to the Instance Security Groups column. Click on the blue Save button to apply the changes:

Figure 6.20