HI ,

User authentication will be done first on ourDNNwebsite(test1.com) , if data not found will be hooked from another DNN website(www.test2.com) Our Approach: i have Create a one webservice which have one methode :

<WebMethod(EnableSession:=True)> _
    Public Function LoginAuthenticationUser(ByVal PortalId As Integer, ByVal UserName As String, ByVal Password As String) As String

  Dim strMessage As String = Null.NullString
        Dim expiryDate As DateTime = Null.NullDate
        Dim loginStatus As UserLoginStatus = UserLoginStatus.LOGIN_FAILURE
        Dim objUser As UserInfo = UserController.ValidateUser(PortalId, UserName, Password, "DNN", "", "", "127.0.0.1", loginStatus)
        If objUser Is Nothing Then
            Return "FALSE"
        Else
            Return "TRUE"
        End If  End Function

if it is return sucess then login in our test1.com website how it is possible . because withoout

UserController.UserLogin(PortalId, objUser, PortalSettings.PortalName, AuthenticationLoginBase.GetIPAddress(), "False")

not login on website .

Please give me suggesion.

DNN requires each USER to have a user record set on EACH individual DNN site.  This information is used to control menu permissions and pretty much every other part of the site.

As such you would need to include code to replicate the user details between each site - this is how ActiveDirectory type authentication works on dnn
 - a dnn user is created internally in the dnn portal to hold the dnn specific details for the current session.

Westa