A Few Words about VNC Security
According to the realvnc.com web site, the RealVNC Free Edition uses a "simple challenge-response protocol." The session is unencrypted, meaning that what you type could be picked up by a snooping hacker. Accordingly, one should consider running RealVNC only within a LAN or over a VPN. You also might consider reading my article about setting up a Windows XP-based VPN and running RealVNC in the secured environment. Alternatively, you might consider using VNC Enterprise or VNC Personal Editions, which include support for encryption of your VNC connection. For those watching their pocket book, the VNC Enterprise and Personal Editions are not free.