With <authentication mode="Windows"/> in your application and Anonymous access enabled in IIS,
you will see the following results:
System.Environment.UserName: Computer Name
Page.User.Identity.Name: Blank
System.Security.Principal.WindowsIdentity.GetCurrent().Name: Computer Name
With <authentication mode="Windows"/> in your application, and ‘Anonymous access’ disabled and
only ‘Integrated Windows Authentication’ in IIS, you will see the following
results:
System.Environment.UserName: ASPNET (user account used to run
ASP.NET service)
Page.User.Identity.Name:
Domain\
Windows Account Name
System.Security.Principal.WindowsIdentity.GetCurrent().Name: Computer Name\ASPNET
With <authentication mode="Windows"/> and <identity impersonate ="true"/> in your application, and ‘Anonymous access’ disabled and
only ‘Integrated Windows Authentication’ in IIS, you will see the following
results:
System.Environment.UserName: Windows Account Name
Page.User.Identity.Name: Domain\ Windows
Account Name
System.Security.Principal.WindowsIdentity.GetCurrent().Name: Domain\ Windows
Account Name
With <authentication mode="Forms"/>:
Request.ServerVariables["LOGON_USER"]: Domain\ Windows Account
Name