Active Directory IIS needs to get user logged in from client not @ server


I have an intranet site behind  a highly secure firewall.   I need to get the user at the client that is logged in

I am using this in c# in a web forms application

using System.DirectoryServices;
using System.DirectoryServices.AccountManagement;
using System.Security.Principal;
  String UserName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;

It gives me the account of the server.  I need to get the username of the person logged in at the client.

How can I do this?  Any way to make it pass through from to IIS?  Maybe turn anonymous access off?

Thank You
Charles BaldoSoftware DeveloperAsked:
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ste5anConnect With a Mentor Senior DeveloperCommented:
You need to activate impersonation:

- Using IIS Authentication with ASP.NET Impersonation
- Configure ASP.NET Impersonation Authentication (IIS 7)

Important: do this in collaboration with your domain and network administrator.
Chris DentConnect With a Mentor PowerShell DeveloperCommented:
Turning off anonymous access would be a good first step. Perhaps consider using Windows Integrated Authentication for your application.

Then you can use this to retrieve the user:
WindowsIdentity identity = HttpContext.Current.Request.LogonUserIdentity

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Charles BaldoSoftware DeveloperAuthor Commented:
Thank you both were neeeded
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