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Wireshark 抓取 BLE 資料包Wireshark 抓取 BLE 資料包

Wireshark 抓取 BLE 資料包

使用藍牙單片機的sniffer固件(如nRF52系列的sniffer)配合Wireshark抓BLE資料包

BLE廣播包

BLE廣播資料包一直就在37,38,39這三個信道跳頻,是以很容易抓到,直接預設設定抓取即可

BLE資料包

BLE資料包的跳頻範圍大(除廣播資料信道外的33個信道),想要抓到完整的資料包就需要抓包器全通道實時監測(使用Ellisys等專業裝置可輕松抓取,但價格很昂貴),當我們想用一個單片機式的sniffer就想抓到完整的資料通常比較困難(硬體能力受限),可以設定下過濾提升成功率。

  • 注意Filter欄是過濾顯示(軟體顯示的過濾),文法:Wireshark Filter rule
    Wireshark 抓取 BLE 資料包Wireshark 抓取 BLE 資料包
  • Device那一欄是抓包器的監測過濾(硬體抓包的過濾)
    Wireshark 抓取 BLE 資料包Wireshark 抓取 BLE 資料包