[Help] Packet sniffing with old Android phone?

durinn@programming.dev to

Android@lemmy.worldEnglish · 4 days ago

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.

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

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