Hi,
As far as I know you cannot connect using TigerVNC's viewer to a RealVNC
server using an encrypted connection. RealVNC keeps their security
types secret so there's no way for us to support their authentication
schemes.
The only matching security type that RealVNC support is the unencrypted
"VncAuth".
Regards,
--
Samuel Mannehed Software Development
Cendio AB
https://cendio.com
Teknikringen 8
https://twitter.com/ThinLinc
583 30 Linköping
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Phone: +46 13 214 600