Cygwin/X can be used login to one or several remote sessions using XDMCP (X Display Manager Control Protocol).
Start Cygwin/X with a command similar to the following to login to a single remote session using XDMCP:
XWin.exe -query remote_hostname_or_ip_address
You may login to several remote sesstions with a single or multiple hosts using XDMCP. Each session will need a seperate display number, specified by the :display_number parameter, such as :0. A display number is not the same as a screen number, as a single display can have multiple screens associated with it. Each display listens on a different network port number, so each display can connect to multiple machines. Start Cygwin/X with command lines similar to the following to login to several remote sessions using XDMCP:
XWin.exe :0 -query remote_hostname_or_ip_address_0
XWin.exe :1 -query remote_hostname_or_ip_address_1
Note that the :display_number parameter is a general X Server parameter, not specific to Cygwin/X. Further documentation of the :display_number parameter can be found in the X Server manual page. XDMCP is a complex system that is not specific to Cygwin/X; further discussion of XDMCP is beyond the scope of this document. You may wish to read the Linux XDMCP HOWTO or the X Server XDMCP Options for more information.