ADDERView Secure Analogue Enhanced Manual

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ThreatSolution
Data being sent to ports 
by means of faulty or 
subverted keyboards or 
mice causing the channel 
to switch and sending 
data in turn to each port.
Channel switching is controlled by the front 
panel buttons only with all keyboard hotkey 
or mouse switching capabilities removed 
from the design.
Data transfer by means of 
common storage.
USB ports support keyboard and mouse 
(and	optional	card	reader)	connections	
only. The product does not enable a USB 
memory stick or disk drive to be shared 
between computers. Unidirectional 
keyboard and mouse data signalling 
protects against data transfer across the 
switch.
Timing analysis attacks.If a connection exists between a computer 
and a shared microprocessor system, it 
is potentially possible to determine what 
may be happening on the micro by timing 
the responses to repeated requests that 
the micro must service. For example, if 
a high data bit takes longer to transmit 
through the system than a low bit it may 
be possible to detect the pattern of data 
flowing between other ports by attempting 
to time the responses to otherwise normal 
requests. In the AdderView Secure, each 
port has a dedicated processor that only 
has input signals from the rest of the 
system. These input signals are only active 
when the port is selected. Consequently a 
timing analysis attack from one computer 
would yield no information about data 
flowing to another computer.
The user selects the wrong 
port. 
Only	one	simple	method	of	selecting	
computers is provided. The selected port 
is clearly and unambiguously indicated on 
the front panel by means of colored lights 
adjacent to each key switch. For high levels 
of security, the screens of high and low 
security computers should be arranged to 
look visibly different in general appearance.
ThreatSolution
Forced malfunctions due 
to overloaded signalling.
It is potentially possible to create forced 
malfunctions by constantly and quickly 
sending	a	stream	of	valid	requests	(such	as	
the	request	to	update	the	keyboard	lights).	
A well known example of an undesirable 
KVM malfunction is a “crazy mouse” 
which was quite common with early KVM 
switches and was caused by data loss on 
PS/2 systems with the result that the mouse 
darted around the screen randomly clicking 
and opening windows. The unidirectional 
design of the AdderView Secure ensures 
that the influence of signalling on one port 
cannot flow past the data diodes. This 
means that overload signalling on one port 
will not affect the operation of another 
port. USB signalling is not susceptible to the 
failure mechanism that caused the crazy 
mouse on PS/2 systems.
Signalling by means of 
shorting the power supply 
or loading the power 
supply.
Each port is independently powered by its 
USB port. Shorting the power supply on 
one port will not cause the power on other 
ports to be switched off. 
Tampering with the 
switch.
The switch is fitted with tamper protection 
measures.
Data transfer by means of 
a shared smartcard.
The switch provides a layer of isolation 
between the physical smartcard reader and 
the computer. This will counter threats 
associated with sharing the same physical 
card reader. The result is to deliver the 
same security level as would be present 
if multiple card readers were used and 
the card was swapped between them. 
A further level of security is provided by 
making the smartcard function absent 
from	certain	computers	(by	means	of	using	
cables that lack the yellow smartcard USB 
connector).
Non-authentic facsimile 
switches.
The enhanced models enable the 
authenticity of the switch to be checked by 
means of security certificates.   
						

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Getting assistance
If you are still experiencing problems after checking the information co\
ntained 
within this guide, then we provide a number of other solutions:
•	Online solutions and updates – www.adder.com/support
 Check the Support section of the adder.com website for the latest soluti\
ons 
and firmware updates.
•	Adder Forum – forum.adder.com
 Use our forum to access FAQs and discussions.
•	Technical support – www.adder.com/contact-support-form
 For technical support, use the contact form in the Support section of th\
e 
adder.com website - your regional office will then get in contact with\
 you.    
						

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Safety information
•	 For	use	in	dry,	oil	free	indoor	environments	only.
•	 Warning	-	live	parts	contained	within	power	adapter.
•	 No	user	serviceable	parts	within	power	adapter	-	do	not	dismantle.
•	Plug the power adapter into a socket outlet close to the module that it \
is 
powering.
•	Replace	the	power	adapter	with	a	manufacturer	approved	type	only.	
•	Do not use the power adapter if the power adapter case becomes damaged, \
cracked or broken or if you suspect that it is not operating properly.
•	Do not attempt to service the unit yourself.
•	 Not	suitable	for	use	in	hazardous	or	explosive	environments	or	next	to	highly	
flammable materials.
•	 Do	not	use	the	power	adapter	if	the	power	adapter	case	becomes	damaged,	
cracked or broken or if you suspect that it is not operating properly.
•	 If	you	use	a	power	extension	cable,	make	sure	the	total	ampere	rating	of	the	
devices plugged into the extension cable do not exceed the cable’s am\
pere 
rating. Also, make sure that the total ampere rating of all the devices \
plugged into the wall outlet does not exceed the wall outlet’s ampere rating.
•	 The	power	adapter	can	get	warm	in	operation	–	do	not	situate	it	in	an	
enclosed space without any ventilation. 
Lithium battery
CAUTION: This product contains a lithium battery which must be disposed \
of in the correct manner.
CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN 
INCORRECT TYPE.
•	If the lithium battery needs to be changed, you must return the product to your 
nearest Adder dealer. The battery must be replaced by an authorized Adder 
dealer. 
•	 Once	the	product	has	come	to	the	end	of	its	useful	life,	the	lithium	battery	
must be removed as part of the decommissioning process and recycled in 
strict accordance with the regulations stipulated by your local authorit\
y. 
Advice on battery removal can be provided on request by Adder. 
Warranty
Adder	Technology	Ltd	warrants	that	this	product	shall	be	free	from	defects	in	
workmanship and materials for a period of two years from the date of ori\
ginal 
purchase. If the product should fail to operate correctly in normal use \
during the 
warranty period, Adder will replace or repair it free of charge. No liab\
ility can be 
accepted for damage due to misuse or circumstances outside Adder’s co\
ntrol. 
Also Adder will not be responsible for any loss, damage or injury arisin\
g directly 
or indirectly from the use of this product. Adder’s total liability u\
nder the terms 
of this warranty shall in all circumstances be limited to the replacemen\
t value of 
this product.
If any difficulty is experienced in the installation or use of this pr\
oduct that you 
are unable to resolve, please contact your supplier.   
						

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Radio Frequency Energy
All interface cables used with this equipment must be shielded in order \
to 
maintain compliance with radio frequency energy emission regulations and\
 
ensure a suitably high level of immunity to electromagnetic disturbances\
.
European EMC directive 89/336/EEC
This equipment has been tested and found to comply with the limits for a\
 class 
A computing device in accordance with the specifications in the Europe\
an 
standard	EN55022.	These	limits	are	designed	to	provide	reasonable	protection	
against harmful interference. This equipment generates, uses and can rad\
iate 
radio frequency energy and if not installed and used in accordance with \
the 
instructions may cause harmful interference to radio or television recep\
tion. 
However, there is no guarantee that harmful interference will not occur \
in a 
particular installation. If this equipment does cause interference to ra\
dio or 
television reception, which can be determined by turning the equipment o\
n 
and off, the user is encouraged to correct the interference with one or \
more 
of	the	following	measures:	(a)	Reorient	or	relocate	the	receiving	antenna.	(b)	
Increase	the	separation	between	the	equipment	and	the	receiver.	(c)	Connect	
the equipment to an outlet on a circuit different from that to which the\
 receiver 
is	connected.	(d)	Consult	the	supplier	or	an	experienced	radio/TV	technician	for	
help. 
FCC Compliance Statement (United States)
This equipment generates, uses and can radiate radio frequency energy 
and if not installed and used properly, that is, in strict accordance wi\
th the 
manufacturer’s instructions, may cause interference to radio communic\
ation. 
It has been tested and found to comply with the limits for a class A com\
puting 
device in accordance with the specifications in Subpart J of part 15 o\
f FCC rules, 
which are designed to provide reasonable protection against such interfe\
rence 
when	the	equipment	is	operated	in	a	commercial	environment.	Operation	of	this	
equipment in a residential area may cause interference, in which case th\
e user at 
his own expense will be required to take whatever measures may be necess\
ary 
to correct the interference. Changes or modifications not expressly ap\
proved by 
the manufacturer could void the user’s authority to operate the equip\
ment.
Canadian Department of Communications RFI statement
This equipment does not exceed the class A limits for radio noise emissi\
ons from 
digital apparatus set out in the radio interference regulations of the C\
anadian 
Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioé\
lectriques dépassant 
les limites applicables aux appareils numériques de la classe A presc\
rites dans 
le règlement sur le brouillage radioélectriques publié par le m\
inistère des 
Communications du Canada.   
						

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www.ctxd.com Documentation by:
©	2015	Adder	Technology	Limited
All trademarks are acknowledged.
Part	No.	MAN-AVSV-ADDER	•	Release	1.5
Web:  www.adder.com
Contact:  www.adder.com/contact-details
Support: forum.adder.com