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       zmap - The Fast Internet Scanner


       zmap  [ -p <port> ] [ -o <outfile> ] [ OPTIONS... ] [ ip/hostname/range


       ZMap is a network tool for  scanning  the  entire  Internet  (or  large
       samples).  ZMap is capable of scanning the entire Internet in around 45
       minutes on a gigabit network connection, reaching ~98% theoretical line


              IP addresses or DNS hostnames to scan. Accepts IP ranges in CIDR
              block notation. Defaults to 0.0.0/8

       -p, --target-port=port
              TCP or UDP port number to scan (for  SYN  scans  and  basic  UDP

       -o, --output-file=name
              When  using  an output module that uses a file, write results to
              this file. Use - for stdout.

       -b, --blacklist-file=path
              File of subnets to exclude, in CIDR notation, one-per  line.  It
              is  recommended  you  use  this  to  exclude RFC 1918 addresses,
              multicast, IANA reserved space, and other  IANA  special-purpose
              addresses.  An  example  blacklist  file blacklist.conf for this

       -n, --max-targets=n
              Cap the number of targets to probe. This can either be a  number
              (e.g.  -n  1000) or a percentage (e.g. -n 0.1%) of the scannable
              address space (after excluding blacklist)

       -N, --max-results=n
              Exit after receiving this many results

       -t, --max-runtime=secs
              Cap the length of time for sending packets

       -r, --rate=pps
              Set the send rate in packets/sec

       -B, --bandwidth=bps
              Set the send rate in bits/second (supports suffixes G, M, and  K
              (e.g. -B 10M for 10 mbps). Thi s overrides the --rate flag.

       -c, --cooldown-time=secs
              How  long  to  continue  receiving  after  sending has completed

       -e, --seed=n
              Seed used to select address permutation. Use this if you want to
              scan addresses in the same order for multiple ZMap runs.

              Split  the  scan  up  into  N  shards/partitions among different
              instances  of  zmap  (default=1).  When  sharding,   --seed   is

              Set which shard to scan (default=0). Shards are 0-indexed in the
              range [0, N), where N  is  the  total  number  of  shards.  When
              sharding --seed is required.

       -T, --sender-threads=n
              Threads  used  to  send packets. ZMap will attempt to detect the
              optimal number of send threads based on the number of  processor

       -P, --probes=n
              Number of probes to send to each IP (default=1)

       -d, --dryrun
              Print  out  each  packet to stdout instead of sending it (useful
              for debugging)

       -s, --source-port=port|range
              Source port(s) to send packets from

       -S, --source-ip=ip|range
              Source address(es) to send packets from.  Either  single  IP  or
              range (e.g.

       -G, --gateway-mac=addr
              Gateway  MAC  address to send packets to (in case auto-detection
              does not work)

       -i, --interface=name
              Network interface to use

       ZMap allows users to specify and write their own probe  modules.  Probe
       modules  are  responsible  for  generating  probe  packets to send, and
       processing responses from hosts.

              List available probe modules (e.g. tcp_synscan)

       -M, --probe-module=name
              Select probe module (default=tcp_synscan)

              Arguments to pass to probe module

              List the fields the selected probe module can send to the output

       ZMap allows users to specify and write their own output modules for use
       with ZMap. Output modules are responsible for processing the  fieldsets
       returned by the probe module, and outputing them to the user. Users can
       specify output fields, and write filters over the output fields.

              List available output modules (e.g. tcp_synscan)

       -O, --output-module=name
              Select output module (default=csv)

              Arguments to pass to output module

       -f, --output-fields=fields
              Comma-separated list of fields to output

              Specify an output filter over the fields defined  by  the  probe

       -C, --config=filename
              Read a configuration file, which can specify any other options.

       -q, --quiet
              Do not print status updates once per second

       -g, --summary
              Print  configuration  and  summary  of results at the end of the

       -v, --verbosity=n
              Level of log detail (0-5, default=3)

       -h, --help
              Print help and exit

       -V, --version
              Print version and exit

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