A beveiligingsonderzoeker has a portscanner that it would be possible to make a 3-minute time completed. n certain port to all ip addresses on the public internet scan. For that speed to be able to achieve, is a very fast uplink is required.
According to the creator of the portscanner, Robert Graham, Masscan is the fastest portscanner in the world. Until now it was Zmap known as the fastest portscanner: that scanner can in 45 minutes a portscan on all ip addresses, run. Masscan may, however, in three minutes, claims Graham. In addition, not all ports are scanned, only one port per ip address, for example port 80.
Graham has his scanner is still not on the internet able to test, because for a portscan with that speed an internet connection with a speed of 10Gbit/s. Per second to 25 million packets of the door be done, what with the internet service provider of Graham was not possible. Therefore, the researcher tests performed on its local network. Therefore it is not sure if the tool on the public internet is just as fast: slow or non-responding servers can be a spanner in the works throw.
In addition to the exceptionally fast internet connection is a dual port 10Gbit/s network card is required, as well as a special driver for the network card. The high speed is only possible under Linux; at the rate of 25 million packets per second to achieve namely the kernel to be bypassed. Windows, OS X and OpenBSD are also supported, but the kernel can not be bypassed, allowing the portscanner under those operating systems up to 300,000 packets per second to send.
