Impersonation from a windows service

[Leo]

Hi,

I Need to access some files in a directory on server B
from a windows service (written in VB.NET) running on
server A (localsystem account).

How can I impersonate a user with sufficient rights on
server B from within the service running on server A so I
can access the files on server B?

Thanks in advance, Leo.

[John Timney \(Microsoft MVP\)]

You will probably need to start with the networkcredentials classes and work
out what you need to pass from there
http://msdn.microsoft.com/library/de...us/cpref/html/
frlrfsystemnetnetworkcredentialclasstopic.asp

A better (quicker) approach would to install your service to run under a
designated account that has the correct permissions already to connect to
remote drives etc.

and this is a neccesary read........
http://www.ondotnet.com/pub/a/dotnet...rmissions.html

--
Regards

John Timney (Microsoft ASP.NET MVP)
----------------------------------------------
<shameless_author_plug>
Professional .NET for Java Developers with C#
ISBN:1-861007-91-4
Professional Windows Forms
ISBN: 1861005547
Professional JSP 2nd Edition
ISBN: 1861004958
Professional JSP
ISBN: 1861003625
Beginning JSP Web Development
ISBN: 1861002092
</shameless_author_plug>
----------------------------------------------

"Leo" <no****@newsgroups.com> wrote in message
news:00****************************@phx.gbl...

Hi,

I Need to access some files in a directory on server B
from a windows service (written in VB.NET) running on
server A (localsystem account).

How can I impersonate a user with sufficient rights on
server B from within the service running on server A so I
can access the files on server B?

Thanks in advance, Leo.

[Tian Min Huang]

Hi Leo,

Thanks for your post. I suggest that you can call WNetAddConnection2() API
to connect the directory on remote server. For .NET managed application,
you need to use P/Invoke to call unmanaged API. Please refer to the
following KB articles:

WNetAddConnection2
http://msdn.microsoft.com/library/de...us/wnet/wnet/w
netaddconnection2.asp

Consuming Unmanaged DLL Functions
http://msdn.microsoft.com/library/de...us/cpguide/htm
l/cpconconsumingunmanageddllfunctions.asp?frame=true

Hope this helps.

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

Get Secure! -- www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

[Leo R]

Tian,

Thanks for your reply. This is exactly the information I needed!

Leo.

"Tian Min Huang" <ti******@online.microsoft.com> wrote in message
news:$x**************@cpmsftngxa07.phx.gbl...

Hi Leo,

Thanks for your post. I suggest that you can call WNetAddConnection2() API
to connect the directory on remote server. For .NET managed application,
you need to use P/Invoke to call unmanaged API. Please refer to the
following KB articles:

WNetAddConnection2
http://msdn.microsoft.com/library/de...us/wnet/wnet/w netaddconnection2.asp

Consuming Unmanaged DLL Functions
http://msdn.microsoft.com/library/de...us/cpguide/htm l/cpconconsumingunmanageddllfunctions.asp?frame=true

Hope this helps.

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

Get Secure! -- www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

[Leo R]

Thanks for your reply John,

I need to connect to a UNIX server, so the account is not part of the server
(or domain) that I'm connecting from. I got some useful links from another
reply (Tian).

Leo.

"John Timney (Microsoft MVP)" <ti*****@despammed.com> wrote in message
news:ON**************@TK2MSFTNGP12.phx.gbl...

You will probably need to start with the networkcredentials classes and work out what you need to pass from there
http://msdn.microsoft.com/library/de...us/cpref/html/ frlrfsystemnetnetworkcredentialclasstopic.asp

A better (quicker) approach would to install your service to run under a
designated account that has the correct permissions already to connect to
remote drives etc.

and this is a neccesary read........
http://www.ondotnet.com/pub/a/dotnet...rmissions.html

--
Regards

John Timney (Microsoft ASP.NET MVP)
----------------------------------------------
<shameless_author_plug>
Professional .NET for Java Developers with C#
ISBN:1-861007-91-4
Professional Windows Forms
ISBN: 1861005547
Professional JSP 2nd Edition
ISBN: 1861004958
Professional JSP
ISBN: 1861003625
Beginning JSP Web Development
ISBN: 1861002092
</shameless_author_plug>
----------------------------------------------

"Leo" <no****@newsgroups.com> wrote in message
news:00****************************@phx.gbl...

Hi,

I Need to access some files in a directory on server B
from a windows service (written in VB.NET) running on
server A (localsystem account).

How can I impersonate a user with sufficient rights on
server B from within the service running on server A so I
can access the files on server B?

Thanks in advance, Leo.