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1.9.4. 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?
High
BL-819 / 830 will only pair
(Mode 3)
with device entered in the
'Set Partner' menu. Other
device must have identical
PIN number
Medium
BL-819 / 830 will only pair
(Mode 2)
with device entered in the
'Set Partner' menu. Other
device must have correct link
key
Low
N/A
(Mode 1)
Security mode for Adapter as Server (receives connections):
Security:
Who can Pair?
High
Any Device with
(Mode 3)
correct PIN.
Medium
Any Device with
(Mode 2)
correct PIN.
Low
N/A
(Mode 1)
1.9.5. 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-819, BL-830, BL-875
V6.1
Who can it connect to?
Only device entered in the
'Set Partner' Menu, after
pairing.
Only device entered in the
'Set Partner' Menu, after
pairing.
Only device entered in the
'Set Partner' Menu.
Who can Connect?
Possible Use:
Any device
Secure connection between the BL-819 / 830 and a pre-set
device (Link level enforced security – can see device but not
services unless paired)
Any device
Secure connection between the BL-819 / 830 and a pre-set
device (Service level security – can see services but not
connect unless paired)
Any device
When users who do not want to spend time pairing and do
not require a secure connection
© Copyright Brainboxes Ltd
Possible use:
Secure connection between the BL-819 / 830
and a pre-set device (Link level enforced
security – can see device but not services
unless paired)
Secure connection between the BL-819 / 830
and a pre-set 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
Page 12 of 40
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