Re: Impersonation and UnauthorizedAccessException

Is the w drive a local drive or is it a mapped network drive?

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
<kevingeist@xxxxxxxxxxx> wrote in message
news:1161026330.077301.80920@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I hope someone can help me with this. Please tell me what I'm not
seeing. In my web app, I'm trying to create files to a common
directory. Only some network IDs have access to write to this
directory.

In my web.config I have:

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


in my default.aspx.vb I have:
Dim impersonationContext As
System.Security.Principal.WindowsImpersonationContext
Dim currentWindowsIdentity As
System.Security.Principal.WindowsIdentity
....
currentWindowsIdentity = CType(User.Identity,
System.Security.Principal.WindowsIdentity)
impersonationContext = currentWindowsIdentity.Impersonate()
filePath = System.IO.Path.Combine("w:\kbg\", FileName)
My.Computer.FileSystem.WriteAllText(filePath, strData, False)
impersonationContext.Undo()

When I run the app on the localhost it works great. If I comment out
the impersonationContext line, the app fail because the ASPNET account
does not have access to write to the directory. When I uncomment it,
it works, my network account does have access rights. That's what I
want. My network account has access to the directory, I don't want
ASPNET to have access to it.

Next step, I bring up a browser session on another PC and run the app
on my development PC, I get an "Enter Network Password" popup. I enter
my network password, after a few tries I get an
"UnauthorizedAccessException: Access is to the path 'w:\KBG' is
denied." message. Why does it not work if initiated from another PC?
How do I fix it?

Any help would really be appreciated.



.

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