Pass network credentials by .net remoting.

Question

How I can pass my NetworkCredendials by .Net Remoting? Is it possible?

I've a service (TeamFoundationServer) where need a authorize using user's NetworkCredentials. In past, I had used open User/Password pair, but for security reason at now it is not good.
Problem is that NetworkCredentials is not serializable, and I can't pass it as parameter in some method.
Maybe exist other way?

Thank's.