Tripp Lite B092-016 Owner's Manual download pdf (Page 82)

Note

How secure is VNC?

VNC access generally allows access to your whole computer, so security is

very important. VNC uses a random challenge

response system to provide the basic

authentication

that allows you to connect to a VNC server. This is reasonably secure and the

password is not sent over the network.

However, once connected, all subsequent VNC traffic is unencrypted. So a malicious user could

snoop your VNC session. Also there are VNC s

canning programs available, which will scan a

subnet looking for

computer

s which are listening on one of the ports which VNC uses.

Tunneling VNC over a SSH connection ensures all traffic is strongly encrypted. Also no VNC port

is ever open to the internet

, so anyone scanning for open VNC ports will not be able to find your

computers. When tunneling VNC over a SSH connection, the only port which you're opening on

your

Console Server

the SDT port 22.

So sometimes it may be prudent to tunnel VNC through SS

H even when the Viewer

computer

and the

Console Server

are both on the same local network.

To set up the secure SSH tunnel for a

HTTP browser connection from the client

computer

, follow the

steps above.

However when configuring the port redirection, spec

ify port 80 (rather than port 3389 as

was used for RDP) e.g. if using PuTTY:

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Tripp Lite B092-016 Owner's Manual Page 82