Classic vs BLE
Bluetooth Classic and BLE — different stacks, same YOUR-devices-only rule.
Visual · t15_classic_vs_ble
Classic vs BLE = two Bluetooth worlds. Original Cyberlium.
Radio literacy starts with knowing which Bluetooth you are looking at.
Bluetooth Classic supports sustained data (headsets, serial profiles). Bluetooth Low Energy (BLE) advertises small payloads for beacons, fitness, and IoT. Discovery uses inquiry (Classic) or passive/active scanning (BLE). Both have pairing and privacy considerations. Learn to name stacks and GAP/GATT basics on YOUR paired lab devices — never scan or pair-hunt strangers' headphones or medical tags.
1. Classic Bluetooth
Inquiry and page procedures; profiles like A2DP, HID.
Legacy pairing modes matter for risk (see next lesson).
Command guide
Try these commands — Classic Bluetooth
═══ TOOLS & WEBSITES ═══ Browse / read these (authorized learning only — stay in YOUR lab / program scope)
Bluetooth specs — https://www.bluetooth.com/specifications/specs/ BLE overview — https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/radio-versions/
═══ INSTALL ═══
Linux (Debian/Ubuntu):
Command — copy this
sudo apt install bluez
macOS: Use System Settings > Bluetooth
Windows: Use Windows Bluetooth settings / WSL limited
═══ LINUX / macOS ═══
Command — copy this
bluetoothctl show 2>/dev/null || hciconfig -a 2>/dev/null | head -10 || echo 'Bluetooth stack literacy — YOUR devices only' bluetoothctl list 2>/dev/null || true
Primary tools to practice this lesson: bluetoothctl, hciconfig. Reference sites: Bluetooth specs (https://www.bluetooth.com/specifications/specs/); BLE overview (https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/radio-versions/). Run every command in the box — install first, then the usage lines — only on YOUR lab / program scope.
2. Bluetooth LE
Advertising packets, scan requests, GATT services/characteristics.
Random private addresses rotate for privacy — not perfect anonymity.
3. Scope
Lab uses YOUR dongle and YOUR devices only.
No wardriving BLE beacons in public for 'inventory.'
4. What you ship: Classic vs BLE contrast
One paragraph each stack + YOUR devices only rule.
5. What you record before the next lesson
Contrast paragraph in notes.
6. Wrong vs right: stranger SSIDs vs YOUR lab AP
Worked failure — same MSF word, opposite target. Right never needs a café Wi-Fi or classmate laptop.
- Wrong: BLE-scan strangers' fitness trackers in the gym.
- Right: Contrast Classic/BLE. Next: pairing risks.
Mission: Bluetooth stack sheet
1) Write Classic vs BLE use cases. 2) Name discovery method each. 3) Write YOUR devices only rule.
Stuck? Ask Cyberlium AI Mentor
Ask Mentor: “GAP vs GATT in one line?”
APPLY: BLE commonly uses:
APPLY: True or False: Scanning stranger BLE devices is homework.
APPLY: Classic Bluetooth suits: