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I have an ASP.NET application, which runs on machine 1.

When a user access that page from machine 2, I want to find out the user name, under which he or she is logged in on machine 2.

I tried to use

  • Request.LogonUserIdentity.Name
  • Page.User.Identity.Name
  • ((WindowsIdentity)HttpContext.Current.User.Identity).Name
  • ((WindowsIdentity)HttpContext.Current.User.Identity).User
  • Request.LogonUserIdentity.User

but it doesn't work.

Request.LogonUserIdentity.Name returns NT AUTHORITY\IUSR, Request.LogonUserIdentity.User - S-1-5-17, all others - empty strings. NT AUTHORITY\IUSR is the user on the machine, on which the web application runs, not the user on the client machine.

In web.config I disabled impersonation using

<authentication mode="Windows"/>
<identity impersonate="false"/>

What can I do in order to get the user name of the user, who accesses the web page?

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4
  • 4
    Is IIS set up to use Authentication? Sounds like Anonymous access is still enabled. Commented May 16, 2014 at 13:16
  • How can I find it out? Is it specified in the web.config? Commented May 16, 2014 at 13:17
  • 1
    No, it's a server-side setting. You can read more here Commented May 16, 2014 at 13:21
  • 1
    Actually , I would just like to thank you for asking that question cause i would need it's answer in few days Commented May 16, 2014 at 13:45

1 Answer 1

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5

You have to set the authentication in IIS to Windows Authentication (and probably disable all others):

enter image description here

Go to:

  • Website
  • IIS - Authentication
  • Edit according your wishes
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2 Comments

I have the same problem, but wen I Enable windows Authentiation and disable all other, get 401 (Challenge) response.
Maybe your browser doesn't send the authentication well, or you are not part of the domain.

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