UltraVnc SC II
UltraVnc SCII is the version that can be found with the online creator.
Online creator.
SC II allow to make invers connections, server connect to viewer, and repeater
connections. When a repeater (mode II) connection is used, both server and viewer initiate the connection so no port forwarding is needed.
See also
SC (Single click) Step By Step by Donald Muir
and
http://www.uvnc.com/addons/singleclick.html
To fully use SCII you need to understand how the repeater works.
Documentation about the repeater can be found
http://www.uvnc.com/addons/repeater.html
special check the info about mode II.
Also see forum SC