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2005/05/09 p0f Passive Operating System Fingerprinting

© May 2005 Tony Lawrence

Click here: https://lcamtuf.coredump .cx/p0f-help/. Did it identify you correctly? Most likely it did, but you'd probably be surprised to learn how. Some of it is covered at https://lcamtuf.coredump .cx/p0f/README and the author's book "Silence on the Wire" also explains what's underneath.

It would be interesting to lightly adjust Linux tcp/ip source to see what affect that would have. I wonder if those who have real reason to hide their identity have already used this to best determine their masquerading tactics.

For the rest of us, p0f could be useful for making decisions about suspect traffic (in fact, p0f has apparently been used in some intrusion detection software for just that reason). It could also be helpful in some of those mysterious network situations where something unknown on your lan is being annoying.. or when something you think you know isn't reacting as it should because it isn't what you think it is..

Got something to add? Send me email.

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Inexpensive and informative Apple related e-books:

Take Control of Numbers

Digital Sharing Crash Course

iOS 8: A Take Control Crash Course

Take control of Apple TV, Second Edition

Take Control of iCloud, Fifth Edition

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I wanted to learn how to swim, so Google showed me how to turn on the water at the sink and let me splash it around a bit. They then dragged me into a helicopter, flew way out into the ocean and dumped me out. (Tony Lawrence)

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