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I am running a web service on IIS 6.0, impersonation is set to true, so my
web service can access resources depending on the client's privileges, but
when I launch a child process from the web service, this child process does
not inherit the security context of its parent (impersonated) thread. How
can I delegate this impersonation to the child process without making any
calls to unmanaged code like CreateProcess etc.

Here is my C# code, that is run from a web service, creates a child process
(a command shell) and tries to access a network resource. This child process
runs as
"NT Authority\Network Service" and therefore cannot access network
resources. I want to impersonate this child process, so it can access
network resources depending on the rights of client.

Process proc = new Process();
proc.StartInfo.FileName = "cmd";
proc.StartInfo.Arguments = "/k "+str+ " > h:\\temp\\log.txt";
proc.StartInfo.WorkingDirectory = @"h:\temp";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.CreateNoWindow = true;
proc.Start();

Thanks
Aadil