# Scan a class B subnet for the top 100 ports at 100,000 packets per second To increase that, simply supply the ––rate option and specify a value. As discussed already, the whole point of masscan is to be quick, so let’s speed it up.īy default, masscan scans at a rate of 100 packets per second, which is quite slow. Using the settings above you’ll definitely get results, but the speed will be quite average. Now that we’ve covered some basics, let’s look at some additional tweaks we can make. You can check masscan’s options with the ‐‐echo switch. Masscan has been designed to work much like nmap, which makes it instantly approachable for thousands of security professionals and enthusiasts. Many people use masscan to scan very large networks (such as the internet) on one or just a few ports. $ sudo apt-get install clang git gcc make libpcap-devīrew is the main command for Homebrew, which you can get here. This will install the binary under bin/masscan you’ll have to move it to run it from somewhere else. Installing masscan is fairly straightforward whether you’re using Linux or macOS. If you just need syntax to run with you can jump ahead to the Quickstart. In this short tutorial we’re going to learn the basics and provide some real-world examples. Masscan was created for the sole purpose of scanning the entire internet as fast as possible, according to its author Robert Graham, this can be done in less than 6 minutes at around 10 million packets per second. Asynchronous transmission means the scanner doesn’t have to wait for replies before sending out probes.
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