When you use non-Windows credentials authorities such as RADIUS, you cannot use "Windows" groups. These are only available through the use of Windows-based authentication. You have to change the rule to use "non-Windows" accounts. From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Ellis, John P. Sent: Tuesday, April 12, 2011 2:10 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] RADIUS Authentication & OWA I am trying to setup ISA 2004 SP3 to work with Vasco to authenticate OWA 2003 requests. I have setup the publishing rule so it works with AD user name and password. As soon as I change the authentication type from Intergrated to RADIUS I am unable to access OWA/get a login prompt I have used NTRADPing to make sure I can send requests from ISA to the RADIUS server and this works OK. Is there anything else I need to do on ISA to allow these requests? Or have I missed something simple? John ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.clearswift.com<http://www.clearswift.com> **********************************************************************