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tcpprep(1)			 User Commands			    tcpprep(1)

NAME
       tcpprep - Create a tcpreplay cache cache file from a pcap file.

SYNOPSIS
       tcpprep [-flags] [-flag [value]] [--option-name[[=| ]value]]

       All arguments must be options.

       tcpprep	is  a  pcap(3)	file  pre-processor which creates a cache file
       which provides "rules" for tcprewrite(1) and  tcpreplay(1)  on  how  to
       process and send packets.

DESCRIPTION
       The  basic  operation  of  tcpreplay  is to resend all packets from the
       input file(s) out a single file.	 Tcpprep processes  a  pcap  file  and
       applies	a  set	of  user-specified  rules to create a cache file which
       tells tcpreplay whether or not to send each packet and which  interface
       the packet should be sent out of.

       For  more  details,  please  see the Tcpreplay Manual at: http://tcpre‐
       play.appneta.com

OPTIONS
       -d number, --dbug=number
	      Enable debugging output.	This option may appear up to 1	times.
	      This  option takes an integer number as its argument.  The value
	      of number is constrained to being:
		  in the range	0 through 5
	      The default number for this option is:
		   0

	      If configured with --enable-debug, then you can specify a ver‐
	      bosity level for debugging output.  Higher numbers increase ver‐
	      bosity.

       -a string, --auto=string
	      Auto-split mode.	This option may appear up to 1 times.  This
	      option must not appear in combination with any of the following
	      options: cidr, port, regex, mac.

	      Tcpprep will try to automatically determine the primary function
	      of hosts based on the traffic captured and classify each host as
	      client or server.	 In order to do so, you must provide a hint to
	      tcpprep as to how to search for clients and servers.  Valid
	      hints are:

	      bridge Bridge mode processes each packet to try to determine if
	      the sender is a client or server.	 Once all the packets are pro‐
	      cessed, the results are weighed according to the server/client
	      ratio (--ratio) and systems are assigned an interface.  If tcp‐
	      prep is unable to determine what role a system plays, tcpprep
	      will abort.

	      router Router mode works just like bridge mode, except that
	      after weighing is done, systems which are undetermined are con‐
	      sidered a server if they fall inside a network known to contain
	      other servers.  Router has a greater chance of successfully
	      splitting clients and servers but is not 100% foolproof.

	      client Client mode works just like bridge mode, except that
	      unclassified systems are treated as clients.  Client mode should
	      always complete successfully.

	      server Server mode works just like bridge mode, except that
	      unclassified systems are treated as servers.  Server mode should
	      always complete successfully.

	      first First mode works by looking at the first time each IP is
	      seen in the SRC and DST fields in the IP header.	If the host is
	      first seen in the SRC field, it is a client and if it's first
	      seen in the DST field, it is marked as a server.	 This effec‐
	      tively replicates the processing of the tomahawk test tool.
	      First mode should always complete successfully.

       -c string, --cidr=string
	      CIDR-split mode.	This option may appear up to 1 times.  This
	      option must not appear in combination with any of the following
	      options: auto, port, regex, mac.

	      Specify a comma delimited list of CIDR netblocks to match
	      against the source IP of each packet.  Packets matching any of
	      the CIDR's are classified as servers.

	      IPv4 Example:
		  --cidr=192.168.0.0/16,172.16.0.0/12,10.0.0.0/8
	      IPv6 Example:
		  --cidr=[::ffff:0:0/96],[fe80::/16]

       -r string, --regex=string
	      Regex-split mode.	 This option may appear up to 1 times.	This
	      option must not appear in combination with any of the following
	      options: auto, port, cidr, mac.

	      Specify a regular expression to match against the source IP of
	      each packet.  Packets matching the regex are classified as
	      servers.

       -p, --port
	      Port-split mode.	This option may appear up to 1 times.  This
	      option must not appear in combination with any of the following
	      options: auto, regex, cidr, mac.

	      Specifies that TCP and UDP traffic over IPv4 and IPv6 should be
	      classified as client or server based upon the destination port
	      of the header.

       -e string, --mac=string
	      Source MAC split mode.  This option may appear up to 1 times.
	      This option must not appear in combination with any of the fol‐
	      lowing options: auto, regex, cidr, port.

	      Specify a list of MAC addresses to match against the source MAC
	      of each packet.  Packets matching one of the values are classi‐
	      fied as servers.

       --reverse
	      Matches to be client instead of server.  This option may appear
	      up to 1 times.

	      Normally the --mac, --regex and --cidr flags specify are used to
	      specify the servers and non-IP packets are classified as
	      clients.	By using --reverse, these features are reversed so
	      that the flags specify clients and non-IP packets are classified
	      as servers.

       -C string, --comment=string
	      Embedded cache file comment.  This option may appear up to 1
	      times.

	      Specify a comment to be imbedded within the output cache file
	      and later viewed.

       --no-arg-comment
	      Do not embed any cache file comment.  This option may appear up
	      to 1 times.

	      By default, tcpprep includes the arguments passed on the command
	      line in the cache file comment (in addition to any user speci‐
	      fied --comment).	If for some reason you do not wish to include
	      this, specify this option.

       -x string, --include=string
	      Include only packets matching rule.  This option may appear up
	      to 1 times.  This option must not appear in combination with any
	      of the following options: exclude.

	      Override default of processing all packets stored in the capture
	      file and only send/edit packets which match the provided rule.
	      Rules can be one of:

	      S:<CIDR1>,...  - Source IP must match specified IPv4/v6 CIDR(s)

	      D:<CIDR1>,...  - Destination IP must match specified IPv4/v6
	      CIDR(s)

	      B:<CIDR1>,...  - Both source and destination IP must match spec‐
	      ified IPv4/v6 CIDR(s)

	      E:<CIDR1>,...  - Either IP must match specified IPv4/v6 CIDR(s)

	      P:<LIST> - Must be one of the listed packets where the list cor‐
	      responds to the packet number in the capture file.
		  -x P:1-5,9,15,72-
	      would process packets 1 thru 5, the 9th and 15th packet, and
	      packets 72 until the end of the file

	      F:'<bpf>' - BPF filter.  See the tcpdump(8) man page for syntax.

       -X string, --exclude=string
	      Exclude any packet matching this rule.  This option may appear
	      up to 1 times.  This option must not appear in combination with
	      any of the following options: include.

	      Override default of processing all packets stored in the capture
	      file and only send/edit packets which do NOT match the provided
	      rule.  Rules can be one of:

	      S:<CIDR1>,...  - Source IP must not match specified IPv4/v6
	      CIDR(s)

	      D:<CIDR1>,...  - Destination IP must not match specified IPv4/v6
	      CIDR(s)

	      B:<CIDR1>,...  - Both source and destination IP must not match
	      specified IPv4/v6 CIDR(s)

	      E:<CIDR1>,...  - Either IP must not match specified IPv4/v6
	      CIDR(s)

	      P:<LIST> - Must not be one of the listed packets where the list
	      corresponds to the packet number in the capture file.
		  -x P:1-5,9,15,72-
	      would skip packets 1 thru 5, the 9th and 15th packet, and pack‐
	      ets 72 until the end of the file

       -o string, --cachefile=string
	      Output cache file.  This option may appear up to 1 times.

       -i string, --pcap=string
	      Input pcap file to process.  This option may appear up to 1
	      times.

       -P string, --print-comment=string
	      Print embedded comment in the specified cache file.  This option
	      may appear up to 1 times.

       -I string, --print-info=string
	      Print basic info from the specified cache file.  This option may
	      appear up to 1 times.

       -S string, --print-stats=string
	      Print statistical information about the specified cache file.
	      This option may appear up to 1 times.

       -s string, --services=string
	      Load services file for server ports.  This option may appear up
	      to 1 times.  This option must appear in combination with the
	      following options: port.

	      Uses a list of ports used by servers in the same format as of
	      /etc/services: <service_name>	   <port>/<protocol> # comment

	      Example: http	       80/tcp

       -N, --nonip
	      Send non-IP traffic out server interface.	 This option may
	      appear up to 1 times.

	      By default, non-IP traffic which can not be classified as client
	      or server is classified as "client".  Specifying --nonip will
	      reclassify non-IP traffic as "server".  Note that the meaning of
	      this flag is reversed if --reverse is used.

       -R string, --ratio=string
	      Ratio of client to server packets.  This option may appear up to
	      1 times.	This option must appear in combination with the fol‐
	      lowing options: auto.  The default string for this option is:
		   2.0

	      Since a given host may have both client and server traffic being
	      sent to/from it, tcpprep uses a ratio to weigh these packets.
	      If you would like to override the default of 2:1 server to
	      client packets required for a host to be classified as a server,
	      specify it as a floating point value.

       -m number, --minmask=number
	      Minimum network mask length in auto mode.	 This option may
	      appear up to 1 times.  This option must appear in combination
	      with the following options: auto.	 This option takes an integer
	      number as its argument.  The value of number is constrained to
	      being:
		  in the range	0 through 32
	      The default number for this option is:
		   30

	      By default, auto modes use a minimum network mask length of 30
	      bits to build networks containing clients and servers.  This
	      allows you to override this value.  Larger values will increase
	      performance but may provide inaccurate results.

       -M number, --maxmask=number
	      Maximum network mask length in auto mode.	 This option may
	      appear up to 1 times.  This option must appear in combination
	      with the following options: auto.	 This option takes an integer
	      number as its argument.  The value of number is constrained to
	      being:
		  in the range	0 through 32
	      The default number for this option is:
		   8

	      By default, auto modes use a maximum network mask length of 8
	      bits to build networks containing clients and servers.  This
	      allows you to override this value.  Larger values will decrease
	      performance and accuracy but will provide greater chance of suc‐
	      cess.

       -v, --verbose
	      Print decoded packets via tcpdump to STDOUT.  This option may
	      appear up to 1 times.

       -A string, --decode=string
	      Arguments passed to tcpdump decoder.  This option may appear up
	      to 1 times.  This option must appear in combination with the
	      following options: verbose.

	      When enabling verbose mode (-v) you may also specify one or more
	      additional arguments to pass to tcpdump to modify the way pack‐
	      ets are decoded.	By default, -n and -l are used.	 Be sure to
	      quote the arguments so that they are not interpreted by
	      tcprewrite.  The following arguments are valid:
		  [ -aAeNqRStuvxX ]
		  [ -E spi@ipaddr algo:secret,... ]
		  [ -s snaplen ]

       -V, --version
	      Print version information.

       -h, --less-help
	      Display less usage information and exit.

	      This option has not been fully documented.

       -H, --help
	      Display usage information and exit.

       -!, --more-help
	      Pass the extended usage information through a pager.

       --save-opts [=cfgfile]
	      Save the option state to cfgfile.	 The default is the last con‐
	      figuration file listed in the OPTION PRESETS section, below.
	      The command will exit after updating the config file.

       --load-opts=cfgfile, --no-load-opts
	      Load options from cfgfile.  The no-load-opts form will disable
	      the loading of earlier config/rc/ini files.  --no-load-opts is
	      handled early, out of order.

OPTION PRESETS
       Any option that is not marked as not presettable may be preset by load‐
       ing values from configuration ("RC" or ".INI") file(s).	The homerc
       file is "$$/", unless that is a directory.  In that case, the file
       ".tcppreprc" is searched for within that directory.

FILES
       See OPTION PRESETS for configuration files.

EXIT STATUS
       One of the following exit values will be returned:

       0  (EXIT_SUCCESS)
	      Successful program execution.

       1  (EXIT_FAILURE)
	      The operation failed or the command syntax was not valid.

       66  (EX_NOINPUT)
	      A specified configuration file could not be loaded.

       70  (EX_SOFTWARE)
	      libopts had an internal operational error.  Please report it to
	      autogen-users@lists.sourceforge.net.  Thank you.

AUTHORS
       Copyright 2013-2017 Fred Klassen - AppNeta Copyright 2000-2012 Aaron
       Turner For support please use the tcpreplay-users@lists.sourceforge.net
       mailing list.  The latest version of this software is always available
       from: http://tcpreplay.appneta.com/

COPYRIGHT
       Copyright (C) 2000-2017 Aaron Turner and Fred Klassen all rights
       reserved.  This program is released under the terms of the GNU General
       Public License, version 3 or later.

BUGS
       Please send bug reports to: tcpreplay-users@lists.sourceforge.net

NOTES
       This manual page was AutoGen-erated from the tcpprep option defini‐
       tions.

tcpprep				  16 May 2017			    tcpprep(1)
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