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Belkin® Secure DVI KVM Switch, Secure KM Switch and
Secure Windowing KVM EAL 4 augmented ALC_FLR.3 Security Target
4.3.1 TOE Security Objectives Rationale
Threats, Policies, and
Assumptions
T.INVALIDUSB
The AUTHORIZED USER
will connect
UNAUTHORIZED USB
devices to the peripheral
switch.
T.RESIDUAL
RESIDUAL DATA may be
transferred between
PERIPHERAL PORT
GROUPS with different
IDs
Summary
O.USBDETECT
This objective will ensure detection
of
the
connection
UNAUTHORIZED USB device to the
TOE Console USB port. Information
from this port would be ignored and
not be passed on to a connected
computer.
Invalid connections are recognized
on the keyboard, pointing device,
and User Authentication device.
O.UNIDIR
This objective will ensure that
console KEYBOARD and POINTING
DEVICE data will only flow through
the TOE in one direction from
PERIPHERAL
DEVICES
SWITCHED COUPLED COMPUTER.
O.CONF
The TOE shall not violate the
confidentiality
of
which it processes. Information
generated within any PERIPHERAL
GROUP COMPUTER CONNECTION
shall not be accessible by any other
PERIPHERAL GROUP with a different
Objectives and rationale
O.USBDETECT
This objective will detect the
of
an
UNAUTHORIZED
connection to the TOE Console
USB port. Once such a device is
detected, any information from it
will be ignored and will not be
coupled
COMPUTERs.
This objective will be valid for the
TOE
DEVICE, and User Authentication
device.
Connection of an invalid USB
device to an USB hub or as part
of a composite device will result
in
the
information from that device and
the device will be isolated from
the coupled COMPUTERs.
O.UNIDIR
This
connected mass storage device
from infecting a COUPLED
COMPUTER with malicious code
or from exporting user data.
to
the
O.CONF:
If the PERIPHERALS can be
information,
shared to more than one
COMPUTER at any given instant,
then a channel may exist which
would
information from one to the
other.
Rev. 1.01
device
to
the
connected
KEYBOARD,
POINTING
TOE
ignoring
objective
prevents
allow
transfer
This
is
particularly
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the
a
of
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