| copyright |
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|---|---|---|---|
| lastupdated | 2026-04-24 | ||
| keywords | assign, instance | ||
| subcollection | security-groups |
{{site.data.keyword.attribute-definition-list}}
{: #assigning-instances-to-the-security-group}
You can assign {{site.data.keyword.cloud}} security group objects to instances in one of two ways. {: shortdesc}
{: #using-the-security-menu}
-
From the IBM Cloud console, click the Menu icon
> Classic Infrastructure to view the Classic Infrastructure landing page. -
From the Classic Infrastructure menu, select Security > Network Security > Security Groups to view the Security Groups page.
-
On the Security Groups page, click the
icon of the Security Group object that you want to assign instances to, then select Manage Instances. -
Select the instance and interface to apply to the security group.
-
Click Save to apply the changes.
-
Restart your instance.
This action is a one-time-only step per network interface for instances that are not created with a security group. {: note}
{: #using-the-devices-menu}
-
From the IBM Cloud console, click the Menu icon
> Classic Infrastructure to view the Classic Infrastructure landing page. -
From the Classic Infrastructure menu, select Devices > Device List to view the Devices page.
-
On the Devices page, click the instance name where you want to apply the security group object.
-
In the Security Groups column, click View and select the security group objects that you want to associate with the instance.
-
In the Security group changes modal that appears, click OK to apply the changes.
-
Restart the instance.
This action is a one-time-only step per network interface for instances that are not created with a security group. {: note}
{: #next-step-1}
Edit the security group to modify its parameters.