Here’s what you find when you scan the entire Internet in an hour

Re:Here’s what you find when you scan the entire Internet in... by groby_b on Sunday August 18, 2013 @03:30PM (#6233826)

Since it's stateless, all info is encoded in the outgoing packet. If the outgoing packet (or the reply to it) is lost, it will look exactly the same as if the server didn't respond - after all, the scanning tool has no local state, and thus can't track if an address has been pinged/re-ping it. The port map is entirely drawn based on incoming packets.

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Re:Here’s what you find when you scan the entire Internet in... by perbu on Sunday August 18, 2013 @05:35PM (#6234334)

I don't know how they progress through the IP space, but couldn't they simply solve this by doing it in a deterministic manner? At progress N they should easily be able to tell that A has been scanned. Iterating three times through the IP space all IPs that haven't answered should have gotten the connection attempts.

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Re:Here’s what you find when you scan the entire Internet in... by hmsimha on Sunday August 18, 2013 @07:42PM (#6234766)

That might introduce the same overhead that maintaining state does in the first place. It sounds like they're sending out at least a million requests per second.

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Re:Here’s what you find when you scan the entire Internet in... by gruseom on Sunday August 18, 2013 @04:23PM (#6234069)

Thanks! I get it now. Good explanation.

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