Haxxio UDP Serial Port Redirector
If the button is captioned "Open", when pressed the Redirector will open a network port according to the setting configured. Prior to pressing the button you can change the UDP port setting, which are held within the frame entitled "Transmitted data". Note many fields in this frame appear and disappear according to the UDP Transmit Mode Selection.
if the button is entitled "Configure" then the UDP port is currently open, and you may not change the setting. Press the button to enable configuration of the port.