> Knowing that your computer is at 192.168.1.123 doesn't help attackers much One can reconstruct your subnet scheme with a handful internal IP addresses, allow

> Knowing that your computer is at 192.168.1.123 doesn't help attackers much One can reconstruct your subnet scheme with a handful internal IP addresses, allowing them to locate potential targets faster once they get into your network, making attacks more efficient ("oh, so these guys have some vulnerable clients in this /16, it's probably dev, and I see there's another /24, which looks like prod").