Posted in Cloud, history, Internet, Networks

The Expenditure of TCPv4

While working on an TCP/IP problem today, I was finally struck by the fact that we have for all intents and purposes expended the entire TCPv4 addressing space. I knew it was coming, years ago, but now while testing IP addresses, it dawned on me.

You can now pick any arbitrary set of numbers nnn.nnn.nnn.nnn and expect a response. Ping them, probe them, something will be there, or it’s being held. All gone, this is the equivalent of spitting in the middle of an ocean while swimming,  you are going to hit ocean.

4,294,967,296 (232) addresses gone, 4 Billion addresses in use…..

Posted in Personal

Hiding in plain sight

In this age of ‘Big Data‘ the masters are the ones who hide in plain sight. If you generate billions of media bits that must be parsed by the powers that be, the devil really is in the details.

During a stint in a fraud unit I learned that the trick wasn’t to read all the monitored data, but to build patterns of ‘normal’ for everyone monitored. If the patterned changed then something had changed, and an investigator was assigned.

Another article I keep remembering is an interview with a ‘Ninja Assissan’ who was quoted as;

” I never sleep in the same bed two nights in a row (he had 5 bedrooms), and he never ate the same thing for breakfast (though he always ate what he wanted)

Hence the pattern he would generate would always be random, and therefore a consistent repeated event would be considered abnormal and a ‘red flag’ that something wasn’t normal.

So to hide, and maintain privacy would be to either overwhelm the bit watchers, or develop such a random lifestyle as to make normal pattern matching methods useless.

anyone want to be a Ninja Assissan?