30068 Parallax Inc, 30068 Datasheet - Page 94

• Manufacturer Part Number: 30068
• Description: EMBEDDED BLUE TRANSCEIVER APPMOD
• Manufacturer: Parallax Inc

Specifications of 30068

• Frequency: 2.4GHz
• Data Rate - Maximum: 90kBaud
• Modulation Or Protocol: Bluetooth v1.1, Class 2
• Applications: Bluetooth v1.1
• Power - Output: -4dBm
• Sensitivity: -85dBm
• Voltage - Supply: 5 V ~ 10 V
• Current - Receiving: 80mA
• Current - Transmitting: 250mA
• Data Interface: PCB, Through Hole
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -20°C ~ 75°C
• Package / Case: Module
• Product: Microcontroller Accessories
• Operating Supply Voltage: 5 to 12 V
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q2239141

Security
Step 3:
Page 88 ▪ EmbeddedBlue 500 User Manual
8. On the Run menu, click Run.
1. Disconnect the serial cable from the Board of Education board.
2. Recycle the power on the Board of Education by unplugging the power cable and
3. Pull Stamp I/O line P13 high on the Board of Education board by implementing the
This will display the Download Progress dialog while downloading the program to the
BASIC Stamp.
A device that implements strong security is most vulnerable when allowing devices
that have not yet been trusted to connect, verify their passkey, and become trusted.
There is nothing inherently unsafe about this process; however it is a time when
intruders have the most opportunity to compromise the device.
There are two main concerns when security is set to open. The first is that if a weak
passkey is set, an intruder may be able to guess the passkey and therefore gain
access to the device. This can be largely avoided however, by first choosing a strong
passkey and second by only placing the device into open security mode temporarily
in a safe environment and then returning to closed security mode.
The second concern is that an intruder pulls sensitive information out of the air that
either is directly useful or allows trusted access to the device. This is only possible
during a small window of time when an untrusted device is first connected and
becomes trusted, so this process should be carried out in a safe environment if
possible. Once a device is considered trusted, no information that could be used by
an intruder to gain access to the device is transmitted over the air. If encryption is
enabled as well, then no information including the data sent over the air is vulnerable
to an intruder. By default EmbeddedBlue modules use 56-bit encryption for all data
when enabled.
In this step, we will run the application we wrote in the previous section, which initially
runs in closed security mode with visibility set to off. Stamp I/O line P13 can be
pulled high to change into open security mode with visibility on. At this point, connect
your PC with XP SP2 to the remote Bluetooth device and become “trusted.” After
returning to closed security mode with visibility turned off, only trusted devices (the
PC) can connect to the remote Bluetooth device.
plugging the cable in.
circuit shown in Figure 17.
This puts the eb500 module in open security mode with visibility on.
blinking LED which informs us we are vulnerable to other devices becoming trusted
with the eb500 if they have the correct passkey.
Connecting a PC with XP SP2 to a BOE in open security
Note the