We are setting up a new extranet farm and we want to use SharePoint 2010. We have some usability issues with authentication on our old farm, so I'd like to do things right (or at least righter) on this one.

Does SharePoint 2010 have an OOB way to support forms based authentication that will look in a trusted domain to validate an ID/password before searching a SQL datastore or is this something I'm going to have to write myself?

We are planning to set up alternative access mappings so that users within the office can use NTLM and SSO, but when outside the office, they'll access the site through SSL and we want them to be able to use the FBA form to enter their network credentials and get authorization.

Can anyone point me to a good resource or even a 3rd party provider that supports this already?

2 Answers 2


In SharePoint 2010 you can actually have dual authentication methods on a site when you use Claims Based authentication. This link should help you get FBA set on on 2010. http://blogs.technet.com/b/speschka/archive/2009/11/05/configuring-forms-based-authentication-in-sharepoint-2010.aspx


You might also try using Microsoft Forefront Unified Access Gateway for it's advanced authentication schemes. Using UAG you can set up a form that authenticates a user to their windows account on the extranet access, while continuing to use the regular windows account on the intranet.


Why enable SharePoint extranet access with Forefront UAG?, Microsoft TechNet

Published: January 11, 2010

Updated: February 1, 2011

  • 1
    +1 to this: a cheaper alternative would be ForeFront TMG which can also act as a reverse proxy server. Nov 14, 2011 at 22:42
  • Wow! Good point. I'd never priced that out. CDW shows a Threat Management Gatewat licesnse for $1,400 US compared to $6,500 + $34,000 US External Connector License for Unified Access Gateway.
    – Tom Resing
    Nov 15, 2011 at 1:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.