In C#, how can I access a fileshare on a domain from outside a domain?

I've got a webserver where people upload files. What I need to do is take those files and write them to a file share on the Active Directory domain. The probl开发者_开发百科em -- the webserver is not on the domain.

So, how is the best way to do this? I would have thought this would be easy, something along the lines of create a connection with some credentials and do it. But apparently not. The closest I've found is Impersonation with WindowsIdentity.Impersonate, but everything I've read says that is a bad idea in a production environment.

Any ideas? I'm working on a solution that FTPs the files, but that's unsatisfying too, and a fallback plan.

I'm using c# and .net 4.0 in (obviously) a windows environment.

Edit: I should point out that I can't run servers (or services) that access the outside on that domain. The FTPing is a temporary workaround.

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I would have another program probably a Windows service pick the files from the web service file location and move them to the active directory directory. I would probably have this process execute from the location where they are being copied to. Make them available in a share on the web server visible only to the process's user and admins.

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I think that an FTP solution is better than using a Windows Share; however, I would think a web service of some type would be the best option for an inter-domain file exchange. That said, if you've got it working with WindowsIdentity.Impersonate -- why not use it? What context did you read that it was a bad idea?

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Is there any way that you can map this file share as Network Driver. If you can do that, you don't need to manager Security and will be super easy to access these files as if they are local.