Information about Windows protocols used by the Windows client (including .NET Framework) and Windows Server operating systems, as well as detailed technical specifications, overview documents, and information about the Microsoft Open Specifications program and other general Interoperability resources are primarily found on MSDN, not on TechNet. These resources open new opportunities for developers by providing the information essential to integrating software products with Windows.
Below are several key Windows protocols resources on MSDN and Channel 9.
Windows Protocols Documentation
Find technical specifications and overview documents to help you integrate your products with the Windows operating systems.
Windows Protocols | Open Source, Specifications, Server | TechNet