My company is deploying a mixture of TightVNC over SSH tunnel for BOH (Suse) and UltraVNC with DSM encryption plug-in for POS (Windows XP embedded). One of the challenges we're seeing is over VSAT. With the high latency (1500~3000 ms) and low bandwidth (50~64 kbps up/300~450 kbps down) it's proving to be a challenge to get VNC to work at all, much less be useful in this situation. I suspect the video driver and the small frequent updates it does is detrimental to communication. I believe it's sole purpose is to lighten the load on the CPU and minimize the data sent, but small frequent updates over VSAT are worse than large infrequent updates. I have been searching, but have yet to find a good guide on how to configure VNC for a situation like this. I've pieced together bits and pieces from different forums and online posts, but I'm still a little sketchy on how polling affects bandwidth usage and a lot of the other features. It's clear it affects CPU utilization, but at this point I'm more incline to push all the load on the CPU to compress and optimize the stream before it hits the network. Any suggestions/guidelines to configure VNC for satellite conditions? TIA
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