4 ms·
Except we are more on a chess table where we can just trivially probe each cell, unlike the vast volume of the ocean.
by gf000 1y ago
Except we are more on a chess table where we can just trivially probe each cell, unlike the vast volume of the ocean.
- dijit 1y agoA game of battleship is indeed a good analogy! Just because its a finite space that may eventually be discovered is a poor reason to announce where things are!
- augusto-moura 1y agoBattleship sounds like a good analogy, but is very different because you don't have other options to "secure your ship" besides obscurity. If you had other options, let's say a sonar or moving your ship, they would definitely be used along with obscurity. Besides, the time to scan the whole board is too time consuming in a battleship game, but scanning the whole internet on the other hand only take a few minutes[1] [1]: https://github.com/robertdavidgraham/masscan https://github.com/robertdavidgraham/masscan
- bb88 1y agoYou're talking IPv4 here, not IPv6. A 24 bit network has 254 addresses in IPv4. A 64bit subnet in IPv6 has 2^64. If you can scan 1M ipv6's in a second, you can maybe scan 1 subnet in 584,942 years. So if you're a firewall, and you notice scanning from a particular ip or network, it's easy enough to block them. Also if you are scanning IPv4, you're not scanning addresses behind the NAT'd routers -- which is also effectively a form of obfuscation. So I would argue it's not the entire internet.