Masscan is a fast port scanner capable of scanning the entire IPv4 internet in under five minutes. To achieve maximum speed, it requires a stable 10 Gigabit link and a custom network driver for Linux. In comparison, it can take weeks or even months for the naive implementation of port scanners. This article describes key features behind the internal design of masscan. What is port scanning? Port scanning is a method to determine which ports on a specified list of IPs are open and accept conne...
