RWIN Value Display

RWIN, or Default Receive Window, is the amount of unacknowledged data than can be outstanding on a TCP connection.

The RWIN value Display tells you the current value of RWIN. Whereas Windows can store different MaxMTU values for different TCP/IP keys, it can only store one, system-wide value for RWIN. Therefore, if you have a TCP/IP LAN on your computer, you may wish to leave RWIN disabled.

You can disable RWIN from the "Registry Options" page or, before you use one of the 3 "Settings" buttons, ensure that the "RWIN enabled by Basic and Optimal buttons?" checkbox is NOT ticked.