16
SECT 4
Operation
In operation, the AdderView Secure unit allows you to quickly and securely
switch between up to four systems. Strictly only one system may be accessed at
a time, whereupon the common keyboard and mouse (and smart card reader, if
used) are linked to that system.
Important security features
Tamper-evident seals
Given the high security nature of most installations that incorporate this unit,
tamper-evident seals are fitted as standard across certain chassis screws. As part
of a best practice policy, you are recommended to check any applied seals on a
regular basis to ensure that the unit has not been opened without authorization.
IMPORTANT: Do not use the unit if the tamper-evident seals are
damaged. Do not use if there are any signs of damage to the unit or its
power supply.
The security indicators
The front panel includes five indicators that are dedicated to the AdderView
Secure’s internal security system.
Note: Although anti-subversion monitoring continues to take place while the
unit is powered down, indications are only given once power is reapplied.
If any subversions are suspected by the unit then it will immediately enter a lock
down state where the following will take place:
• The computer channels become isolated and will not respond to the front
panel buttons,
• The green authentication channel indicator will illuminate,
• The four red security will continually show the following flashing alert
sequence:
Anti-subversion monitoring (enhanced models only)
The enhanced models (AVSC1102-XX and AVSC1104-XX) continually monitor
their various defences for potential subversions (even when power is removed),
such as:
• Dismantling of the case,
• Tampering with the circuitry,
• Loss or corruption of authentication security information.
To confirm that such checks are taking place, every five seconds the red security
indicators will display a brief scanning sequence where one light appears to
track right and then left along the row:
www.adder.com
SECURE
ADDER
VIEW
Green authentication
channel indicator
Illuminates whenever the
authentication channel is
selected. The indicator will be
on immediately after power
up, until a computer channel is
selected.
Four red anti-subversion
(and authentication) indicators
On enhanced models, these indicate the
current state of the anti-subversion function
(discussed in the next section) and also
provide responses whenever you use the
authentication process.
Once the alert state occurs, it is irreversible. The unit can no longer be used and
must be replaced.
