I have a public facing website that user can log in with their user name and password.
I want to create a link from the one of website pages to Excel services SharePoint 2013 page using their login credential so user doesn’t have to log in again once they are logged into the website.
What is the best way to integrate the security between asp.net page and SharePoint 2013 site page so they can use the same login credential and log in one time?
What kind of SharePoint security model will be the best option for public facing website (membership)?