Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh ras ip set access ?
Usage: set access [mode = ] ALL|SERVERONLY
Parameters:
mode - what type of access to grant
ALL - clients are able to reach the remote access server and any
networks to which it is connected.
SERVERONLY - clients are able to reach the remote access server only.
Remarks: Specifies whether IP network traffic from any client is
forwarded to the network(s) to which the remote access server
is connected.