Add the External Network to a Security Policy
In order to apply a security policy to your AWS VPC, Perform the following steps.
In the Infoblox CSP, Navigate to the Security Policy page. Highlight Policies, then click on Security Policy in the list that is revealed.
Once on the Security Policies page, locate the security policy that you would like to add your AWS VPC to. Click the checkbox associated with the Security Policy. Then, click Edit.
On the panel that is revealed, click Network Scope in the left navigation panel.
On the Network Scope page, click Add Source. Then, click External Networks in the list that is revealed.
In the Available External Networks panel of the Security Policy, click the arrow associated with the External network that you’ve created in the previous section.
After the External network has been moved from the AVAILABLE panel to the SELECTED panel, click Save.
Finally, click Finish, then Save & Close to confirm the changes to your Security Policy.