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)^[I put "two LANs" within parentheses to denote that the two LANs are not being switched between.] 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.

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[–] 6 points 6 months ago (2 children)

A rooted android phone can run a whole bunch of classical Linux apps for networking including packet sniffing since it has a proper kernel with support for it

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