forked from osmocom/wireshark
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
3.1 KiB
114 lines
3.1 KiB
include::../docbook/attributes.adoc[]
|
|
= randpkt(1)
|
|
:doctype: manpage
|
|
:stylesheet: ws.css
|
|
:linkcss:
|
|
:copycss: ../docbook/{stylesheet}
|
|
|
|
== NAME
|
|
|
|
randpkt - Random packet generator
|
|
|
|
== SYNOPSIS
|
|
|
|
[manarg]
|
|
*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
|
|
ipv6 Internet Protocol Version 6
|
|
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
|
|
--
|
|
|
|
include::diagnostic-options.adoc[]
|
|
|
|
== 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
|
|
|
|
xref:https://www.tcpdump.org/manpages/pcap.3pcap.html[pcap](3), xref:editcap.html[editcap](1)
|