LinkProtocol is an option to LinkLaunch, Install and related functions which specifies the underlying data transport protocol to use for a new MathLink link.
Possible settings for LinkProtocol are "SharedMemory" and "TCPIP".
On Unix and Macintosh, "Pipes" is also supported; on 32-bit Windows systems, "FileMap" is supported. Additional legacy settings such as "TCP" are also supported.