ISA is licensed per CPU socket. It doesn't "count user beans" and so doesn't impose that restriction. You should start here; http://www.microsoft.com/licensing/default.mspx to sort out the Windows and SQL licensing questions. From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Laudenslager Sent: Tuesday, May 27, 2008 9:12 PM To: isalist@xxxxxxxxxxxxx Subject: [isalist] licensing requirements for VPN users... I've got a client that wants me to setup connectivity for 20 users via VPN for access to a private SQL2k5 Server. What are the licensing requirements involved? For the OS, SQL, and ISA? Do I need individual client access licenses? Clients are XP and Vista and will be connecting directly to a ISA2k6 Server. Thanks in advance for your time and consideration. -Paul