cross-posted from: https://programming.dev/post/48972893

Please share any knowledge or experience that you have on packet inspection using smartphones. I would like to sniff at my switch, which is switching between my (two LANs)[1] and my ISP. For this, I have mirrored all ports that are in use to a port that is currently not in use. Can I simply buy one of those USB-C to Ethernet dongles and use tcpdump in Termux? Will Android recognize the dongle as a sniffable network interface? The phone is rooted.

  1. I put “two LANs” within parentheses to denote that the two LANs are not being switched between. ↩︎

  • durinn@programming.devOPEnglish
    1·
    12 days ago

    Right! Do you think the phone will recognize the USB to Ethernet dongle as a network interface?

    • wasu@lemmy.worldEnglish
      4·
      12 days ago

      Many years ago I was using USB WiFi Modem through micro USB port on my tablet. Since that worked, my guess is USB to Ethernet should be recognized as well.