Making a Catalog Item/ Service Portal Public but only to whitelisted IP Address, Is this possible?DetailsService Portals whether it is public or private are hosted on ServiceNow instance. So, you can make use of IP Address Control for restricting the user to access the portal. Make note that this IP Address access control applies to the overall instance. So, if user's IP address is not present in the IP Address Control records then it will block the user.