We installd ISA 2004 on W2003 server in workgroup and using RADUIS server (IAS) to auth, user. The IAS server is a member server of W2003 AD Domain. When the user connect through VPN, after successed auth. through IAS server and IAS grand the access to the user (it showed on the IAS Event log), but our user received error 619 message; port disconnected. After We joint the ISA 2004 server to the domain the problem is gone. The ISA VPN rule is setup same as before. For security reason, Corp. security group don't allow us to joint the ISA server to corp. domain. Is anyone know how to setup the ISA 2004 server not a member server to the domain and still can support the VPN connection? Thanks, Wendy