rain is a powerful tool for testing stability of hardware
and software utilizing IP protocols. It offers its users
the capability of creating their own packets with a wide
variety of command line options.

Here is a sample output of rain --help
------------------------------------------------------------------------


[ rain 1.2.5 by Evil (mystic@tenebrous.com) ] [pid:10792]
Usage: ./rain [options] -t 
options available for root:
  -c                   Specifies how many packets to send; 0 for infinite; Default is 0
  -d                   Specifies delay (in microseconds) between sends; Default is 15000
  -s        Specifies source address (--help -s); 0 for random; Default is 127.0.0.1
  -t         Specifies target address
  --size               Specifies packet size in bytes; Default is 1024
  --dport | -p   Specifies port on target host; Default is 138
  --sport        Specifies port on local host; Default is 420
  --sim             Simulate other known attacks (--help --sim for a list of attacks)

  --udp                       Use UDP shower

  --tcp                       Use TCP shower (Default)
    --stream                  Use a streaming, non-spoofed TCP send shower (--help --stream)
    --connect                 Use a streaming, non-spoofed TCP connect shower (--help --connect)
    --seq              Specifies the TCP sequence number; Default is process ID
    --win              Specifies the TCP window size; Default is 56
    --urg                     Use TCP URG shower
    --ack                     Use TCP ACK shower
    --ack-seq          Specifies the initial TCP acknowledgement sequence; Default is 0
    --psh                     Use TCP PSH shower
    --rst                     Use TCP RST shower
    --syn                     Use TCP SYN shower (Default)
    --fin                     Use TCP FIN shower

  --icmp                      Use ICMP shower
    --icmp-type        Set ICMP type (--help --icmp-type)
    --icmp-code        Set ICMP code (--help --icmp-code)

  --igmp                      Use IGMP shower
    --igmp-type        Set IGMP type (--help --igmp-type)
    --igmp-code        Set IGMP code (--help --igmp-code)

  --frag               Set fragment offset; Default is 0 (--help --frag)
  --tos                Specifies Type of Service value (--help --tos)
  --ttl                Specifies the Time to Live of the packet; Default is 64
  --id                 Specifies the id sequence of the packet; Default is the process ID
  --id-of                     When specified, rain will overflow the id field of the packet by
                              increasing it with each send by one (used with -c 0)

  --version | -v              Prints version information
  --help                      Prints this help menu
Try ./rain --help  for more information about specific options.


------------------------------------------------------------------------

rain also has the ability to duplicate other
well known attacks such as fawx2, bloop, jolt2 and trash2.

The rain homepage is located at:

	http://www.tenebrous.com/rain/