We are seeing a lot of customers going the way and implementing in Extranet/Intranet/Internet scenarios Forms Based Authentication also called FBA. What does this mean when we talk about FBA and MOSS 2007/WSS V3?
Only one answer: Since ASP.NET 2.0 and MOSS 2007/WSSV3 based on that we can offer the ASP.NET feature FBA. Next part is to talk about Client Integration when using FBA and the answer is; yes it works. Believe me that it is still possible that this combination does not work because of other circumstances (firewalls, proxies, routers, NLB’s).
Other ways to use FBA (non-ASP.NET) with ISA Server and all the possible ways to offer a page to enter the credentials might work and should be checked deeper. We cannot explain those ways by just write some lines here.
My colleague Steven Chen wrote a good summary about ASP.NET FBA.
If you want to talk about all the other FBA (non-ASP.NET) solutions please contact the support team who offers that specific FBA.