Hello,
It is not possible to create an allow list based on Domain.
To implement a dynamic list would require leveraging the API to keep the list current.
Please see the link below for documentation on how to leverage the API.
- https://docs.imperva.com/bundle/api-docs/page/api/saas-appsec.htm
Thanks.
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Jaired Anderson
Imperva
https://www.imperva.com/------------------------------