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Manual for BL-819 / 830 © Copyright Brainboxes Limited 2005 Page 16 of 41
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 adapter into security mode 1. This is the lowest security mode
that the Adapter can be configured to. Connections, including service discovery, can take place without the need for
“pairing” or “bonding”. In mode 1, the Adapter 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 Adapter into security mode 2. This mode allows remote Bluetooth
devices to search for and retrieve the services on your Adapter without pairing, but will not allow them to connect
unless the 2 devices are paired.
3) Selecting option “3” will immediately place your Adapter 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 Adapter as Client (initiates Connections):
Security:
Who can Pair? Who can it connect to? Possible use:
High
(Mode 3)
BL-819 / 830 will only pair
with device entered in the
‘Set Partner’ menu. Other
device must have identical
PIN number
Only device entered in
the ‘Set Partner’ Menu,
after pairing.
Secure connection between the BL-819 /
830 and a preset device (Link level
enforced security – can see device but not
services unless paired)
Medium
(Mode 2)
BL-819 / 830 will only pair
with device entered in the
‘Set Partner’ menu. Other
device must have correct
link key
Only device entered in
the ‘Set Partner’ Menu,
after pairing.
Secure connection between the BL-819 /
830 and a preset device (Service level
security – can see services but not connect
unless paired)
Low
(Mode 1)
N/A Only device entered in
the ‘Set Partner’ Menu.
When users who do not want to spend time
pairing and do not require a secure
connection
Security mode for Adapter as Server (receives connections):
Security:
Who can Pair? Who can Connect? Possible Use:
High
(Mode 3)
Any Device with
correct PIN.
Any device Secure connection between the BL-819 / 830 and a
preset device (Link level enforced security – can see
device but not services unless paired)
Medium
(Mode 2)
Any Device with
correct PIN.
Any device Secure connection between the BL-819 / 830 and a
preset device (Service level security – can see services
but not connect unless paired)
Low
(Mode 1)
N/A Any device When users who do not want to spend time pairing and
do not require a secure connection
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”.