Thanks for your response, I've gone through this post before, just wanted to get a quick expert opinion as things are not crystal clear regarding the support for ACS. I also have an alternate question regarding the F5 modules we need to use to achieve the Extranet scenario exposing SharePoint On-Premise app to external users. The scenario i see here goes are following:-
External User sends out a secure request to SP Url which is intercepted by F5 proxy server. Proxy server relays the information to Azure ACS which performs ADAuth and/or 2-Factor authentication against a WAAD (Azure AD holding details of external users). Once the authentication is done request is relayed to internal servers.
Please share your suggestion in terms of F5 modules i need to get a license for and also help me validate the extranet scenario for feasibility of solution.
Thanks in advance!