设置您的服务以使用模拟。

Setup your service(s) to use Impersonation. This way they will take on the identity of the service client.

设置完成后，您可以像下面这样获得调用者的Windows身份：

Once this is setup, you can get the caller's Windows Identity like this:

WindowsIdentity callerWindowsIdentity = ServiceSecurityContext.Current.WindowsIdentity;

查看这篇博客文章，看看它是否能帮助你。

Check out this blog post and see if it helps you out.