RANDPKT(1)						  The Wireshark Network Analyzer						RANDPKT(1)

NAME

       randpkt - Random Packet Generator

SYNOPSIS

       randpkt [ -b <maxbytes> ] [ -c <count> ] [ -t <type> ] <filename>

DESCRIPTION

       randpkt is a small utility that creates a pcap trace file full of random packets.

       By creating many randomized packets of a certain type, you can test packet sniffers to see how well they handle malformed packets.  The
       sniffer can never trust the data that it sees in the packet because you can always sniff a very bad packet that conforms to no standard.
       randpkt produces very bad packets.

       When creating packets of a certain type, randpkt uses a sample packet that is stored internally to randpkt. It uses this as the starting
       point for your random packets, and then adds extra random bytes to the end of this sample packet.

       For example, if you choose to create random ARP packets, randpkt will create a packet which contains a predetermined Ethernet II header,
       with the Type field set to ARP. After the Ethernet II header, it will put a random number of bytes with random values.

OPTIONS

       -b <maxbytes>
	   Default 5000.

	   Defines the maximum number of bytes added to the sample packet.  If you choose a maxbytes value that is less than the size of the
	   sample packet, then your packets would contain only the sample packet... not much variance there! randpkt exits on that condition.

       -c <count>
	   Default 1000.

	   Defines the number of packets to generate.

       -t <type>
	   Default Ethernet II frame.

	   Defines the type of packet to generate:

		   arp		   Address Resolution Protocol
		   bgp		   Border Gateway Protocol
		   bvlc 	   BACnet Virtual Link Control
		   dns		   Domain Name Service
		   eth		   Ethernet
		   fddi 	   Fiber Distributed Data Interface
		   giop 	   General Inter-ORB Protocol
		   icmp 	   Internet Control Message Protocol
		   ip		   Internet Protocol
		   llc		   Logical Link Control
		   m2m		   WiMAX M2M Encapsulation Protocol
		   megaco	   MEGACO
		   nbns 	   NetBIOS-over-TCP Name Service
		   ncp2222	   NetWare Core Protocol
		   sctp 	   Stream Control Transmission Protocol
		   syslog	   Syslog message
		   tds		   TDS NetLib
		   tcp		   Transmission Control Protocol
		   tr		   Token-Ring
		   udp		   User Datagram Protocol
		   usb		   Universal Serial Bus
		   usb-linux	   Universal Serial Bus with Linux specific header

EXAMPLES

       To see a description of the randpkt options use:

	   randpkt

       To generate a capture file with 1000 DNS packets use:

	   randpkt -b 500 -t dns rand_dns.pcap

       To generate a small capture file with just a single LLC frame use:

	   randpkt -b 100 -c 1 -t llc single_llc.pcap

SEE ALSO

       pcap(3), editcap(1)

1.10.3								    2013-07-28								RANDPKT(1)