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At dormitory, our PCs/NBs seems to be attack or say arp spoofing? The guy(s) may using the software like "skiller" or "netcut" or much more enhanced software attacking us, we can only use a software called "NetCut Defender" on Windows 7, but how can I defence on OS X?

We cannot connect to the internet while being attack!

Device: MacBook Pro, OS X Mountain Lion (10.8.2), Mid-2012

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If the attacks persist then a technical solution is the wrong answer. Instead have the guy kicked off the network or suspended. – Hennes Nov 23 '12 at 8:19
I have to know what to do while the administrator from school seems not knowing what's going on. And of course, hard to find out who is the guy. – PlusA Nov 23 '12 at 8:31
up vote 0 down vote accepted

Antinetcut is a Python-based solution that explicitly supports MacOS X, and appears to have been written for the precisely your use-case.

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Found it but it's so difficult to use for me, trying and thanks. – PlusA Nov 25 '12 at 6:36

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