[CentOS] Secure VNC access from iPad

Dear Gurus

If any of you have been successful in using an iPad as a VNC client 
with SSH tunnelling, I'd love to know how it's done.  I have tried 
using the iSSH application, but without success.

I know that the server is accessible from a Windows client (using 
TigerVNC), via an SSH tunnel, so the server is properly configured.

If you have a working example, please let me know what magic sauce you used.

Thanks

David