MASSCAN - Mass IP port scanner (fastest Internet port scanner)

ID KITPLOIT:3230923764127902756
Type kitploit
Reporter KitPloit
Modified 2014-09-30T00:30:38


This is the fastest Internet port scanner. It can scan the entire Internet in under 6 minutes, transmitting 10 million packets per second.

It produces results similar to nmap , the most famous port scanner. Internally, it operates more like scanrand , unicornscan , and ZMap , using asynchronous transmission. The major difference is that it's faster than these other scanners. In addition, it's more flexible, allowing arbitrary address ranges and port ranges.

NOTE: masscan uses a custom TCP/IP stack . Anything other than simple port scans will cause conflict with the local TCP/IP stack. This means you need to either use the -S option to use a separate IP address, or configure your operating system to firewall the ports that masscan uses.

This tool is free, but consider funding it here: 1MASSCANaHUiyTtR3bJ2sLGuMw5kDBaj4T


On Debian/Ubuntu, it goes something like this:

$ sudo apt-get install git gcc make libpcap-dev
$ git clone
$ cd masscan
$ make

This puts the program in the masscan/bin subdirectory. You'll have to manually copy it to something like /usr/local/bin if you want to install it elsewhere on the system.

The source consists of a lot of small files, so building goes a lot faster by using the multi-threaded build:

$ make -j

While Linux is the primary target platform, the code runs well on many other systems. Here's some additional build info:

  • Windows w/ Visual Studio: use the VS10 project
  • Windows w/ MingGW: just type make
  • Windows w/ cygwin: won't work
  • Mac OS X /w XCode: use the XCode4 project
  • Mac OS X /w cmdline: just type make
  • FreeBSD: type gmake
  • other: I don't know, don't care


Usage is similar to nmap . To scan a network segment for some ports:

# masscan -p80,8000-8100

This will:

  • scan the 10.x.x.x subnet, all 16 million addresses
  • scans port 80 and the range 8000 to 8100, or 102 addresses total
  • print output to <stdout> that can be redirected to a file To see the complete list of options, use the --echo feature. This dumps the current configuration and exits. This output can be used as input back into the program:

    masscan -p80,8000-8100 --echo > xxx.conf

    masscan -c xxx.conf --rate 1000

Download MASSCAN