Brainboxes RS232 Product Manual page 13

Security Mode
The factory set security mode is 3 (Highest). This field has 3 available settings from the drop down list:
1) Selecting option "1" will immediately place your converter into security mode 1. This is the lowest security mode
that the converter can be configured to. Connections, including service discovery, can take place without the need
for "pairing" or "bonding". In mode 1, the converter automatically accepts all access requests without initiating
authentication, encryption, or authorization procedures. Any attempt by a remote application to perform
authentication or encryption procedures will be rejected.
2) Selecting option "2" will immediately place your converter into security mode 2. This mode allows remote
Bluetooth devices to search for and retrieve the services on your converter without pairing, but will not allow them to
connect unless the 2 devices are paired.
3) Selecting option "3" will immediately place your converter into security mode 3 (default). This is the highest
security mode available. Connections of any kind (other than a device discovery) from a remote Bluetooth device
are only allowed after a successful "pairing" has been performed. No services will be shown to other Bluetooth
devices unless the 2 devices are successfully paired.
The tables below show some more information with regards to the application of the security settings...
Security modes for converter as Client (initiates Connections):
Security: Who can Pair?
High BL-521 will only pair with
(Mode 3) device entered in the 'Set
Partner'
device must have identical
PIN number
Medium
BL-521 will only pair with
(Mode 2)
device entered in the 'Set
Partner'
device must have correct
link key
Low
N/A
(Mode 1)
Security mode for converter as Server (receives connections):
Security: Who can Pair?
High Any Device
(Mode 3) correct PIN.
Medium Any Device
(Mode 2) correct PIN.
Low N/A
(Mode 1)
Encryption
Encryption is a method of ensuring that the communications between 2 devices cannot be "bugged" or "listened" to
by any unauthorised source. This encryption is performed in lower layers of the protocol stack as defined by the
Bluetooth Specification.
The factory set Encryption mode is "Disabled". This field has a drop down list from which the configuration can be
changed to enable "Point to Point" or "Point to Point & Broadcast".
Manual for BL-521 5_3.doc
Who can it connect to?
Only device entered in
the 'Set Partner' Menu,
menu. Other after pairing.
Only device entered in
the 'Set Partner' Menu,
menu. Other after pairing.
Only device entered in
the 'Set Partner' Menu.
Who can Connect?
with Any device
with Any device
Any device
© Copyright Brainboxes Limited 2004
Possible use:
Secure connection between the BL-521
and a preset device (Link level enforced
security – can see device but not services
unless paired)
Secure connection between the BL-521
and a preset device (Service level security
– can see services but not connect unless
paired)
When users who do not want to spend time
pairing and do not require a secure
connection
Possible Use:
Secure connection between the BL-521 and a preset
device (Link level enforced security – can see device
but not services unless paired)
Secure connection between the BL-521 and a preset
device (Service level security – can see services but
not connect unless paired)
When users who do not want to spend time pairing and
do not require a secure connection
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