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I'll be doing a project for my wireless security course and I need a network card that can inject packets and do packet sniffing for my early 2009 macbook.

What is the recommended card for packet injection? Obviously, preferably USB

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up vote 0 down vote accepted

I use an Alfa 500mW 802.11b/g USB WiFI Adapter that I got on Amazon cheap. Seems to work fine.

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