The Redirector

The Redirector is the component that enables a client computer to gain access to
resources on another computer as if the remote resources were local to the client
computer. The Redirector communicates with other computers using the protocol stack.
The Redirectors primary function is to format remote requests so that they can be
understood by a remote station (such as a file server) and send them on their way through
the network.
The Redirector uses the Server Message Block (SMB) structure as the standard vehicle
for sending these requests. The SMB is also the vehicle by which stations return
responses to Redirector requests.
Each SMB contains a header consisting of the command code (which specifies the task
that the redirector wants the remote station to perform) and several environment and
parameter fields (which specify how the command should be carried out).
In addition to the header, the last field in the SMB may contain up to 64K of data to be
sent to the remote station.