Hi,
Following is the requirement Guest Wi-Fi for external users:
1. User must be authenticated with MFA. User can be pre-defined with email/mobile.
2. Authentication must NOT be on AD or ISE.
3. External captive portal can be used. Separate auth server can be built for visiting users (other than AD/ISE).
4. Internal DNS server can't be used.
5. User can access only specific internet websites but not using internal proxy etc.
How can this be deployed. A step-by-step approach is appreciated. Thanks in advanced.