On the top navigation bar, click Cloud Services, and then select Cloud Hosts from the Compute menu.
From the left navigation pane, select vNICs.
Click More for the target vNIC and then click Edit Security Group.
Click the
icon to assign the vNIC to security groups and click the
icon to remove the vNIC from security groups. As a best practice, leave only one security group in the selected security group list. For more information, see "Restrictions and guidelines."