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1101 and 1102 Secure Device Servers
724-746-5500 | blackbox.com
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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.
Once connected, all subsequent VNC traffic is unencrypted. A malicious user could snoop your VNC session. There are also VNC scanning
programs available, which will scan a subnet looking for PCs that are listening on one of the ports that VNC uses.
Tunneling VNC over a SSH connection ensures all traffic is strongly encrypted. 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 that
you’re opening on your console server is the SDT port 22.
Sometimes it may be prudent to tunnel VNC through SSH even when the Viewer PC and the console server are both on the same local
network.