Fsdb::Filter::tcpdump_to_db(3)

NAME
tcpdump_to_db - convert tcpdump textual output to fsdb

SYNOPSIS
    tcpdump_to_db [-T] < source.tcpdump > target.fsdb

DESCRIPTION
Converts a tcpdump textual data stream to Fsdb format.

Currently it handles only TCP and silently fails on other traffic! Awaiting enhancement... you're welcome to help.

OPTIONS

-t or --daytime
    Adjust times relative to the first timestamp. (Defaults on.)

This module also supports the standard fsdb options:

-d  Enable debugging output.

-i or --input InputSource
    Read from InputSource, typically a file name, or "-" for standard input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.

-o or --output OutputDestination
    Write to OutputDestination, typically a file name, or "-" for standard output, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.

--autorun or --noautorun
    By default, programs process automatically, but Fsdb::Filter objects in Perl do not run until you invoke the run() method. The "--(no)autorun" option controls that behavior within Perl.

--help
    Show help.

--man
    Show full manual.

SAMPLE USAGE

  Input:
    14:11:12.556781 dash.isi.edu.1023 > excalibur.usc.edu.ssh: S 2306448962:2306448962(0) win 32120 <mss 1460,sackOK,timestamp 82802652[|tcp]> (DF)
    14:11:12.561734 excalibur.usc.edu.ssh > dash.isi.edu.1023: S 1968320001:1968320001(0) ack 2306448963 win 4096
    14:11:12.561875 dash.isi.edu.1023 > excalibur.usc.edu.ssh: . ack 1 win 32120 (DF)
    14:11:18.746567 excalibur.usc.edu.ssh > dash.isi.edu.1023: P 316:328(12) ack 348 win 4096
    14:11:18.755176 dash.isi.edu.1023 > excalibur.usc.edu.ssh: P 348:488(140) ack 328 win 32696 (DF) [tos 0x10]
    14:11:18.847937 excalibur.usc.edu.ssh > dash.isi.edu.1023: P 328:468(140) ack 488 win 4096
    14:11:18.860047 dash.isi.edu.1023 > excalibur.usc.edu.ssh: . ack 468 win 32696 (DF) [tos 0x10]
    14:11:18.936255 dash.isi.edu.1023 > excalibur.usc.edu.ssh: P 488:516(28) ack 468 win 32696 (DF) [tos 0x10]

or a more modern form

    17:00:14.808855 IP 10.0.0.172.31738 > 10.1.0.50.telnet: Flags [S], seq 3236187954, win 21463, length 0

  Command:
    tcpdump_to_db

  Output:
    #fsdb time proto src dest flags start end len ack win
    51072.556781 tcp dash.isi.edu.1023 excalibur.usc.edu.ssh S 2306448962 2306448962 0 - 32120
    51072.561734 tcp excalibur.usc.edu.ssh dash.isi.edu.1023 S 1968320001 1968320001 0 2306448963 4096
    51072.561875 tcp dash.isi.edu.1023 excalibur.usc.edu.ssh . - - - 1 32120
    51078.746567 tcp excalibur.usc.edu.ssh dash.isi.edu.1023 P 316 328 12 348 4096
    51078.755176 tcp dash.isi.edu.1023 excalibur.usc.edu.ssh P 348 488 140 328 32696
    51078.847937 tcp excalibur.usc.edu.ssh dash.isi.edu.1023 P 328 468 140 488 4096
    51078.860047 tcp dash.isi.edu.1023 excalibur.usc.edu.ssh . - - - 468 32696
    51078.936255 tcp dash.isi.edu.1023 excalibur.usc.edu.ssh P 488 516 28 468 32696
    #  | tcpdump_to_db

SEE ALSO
Fsdb.

CLASS FUNCTIONS

  new
    $filter = new Fsdb::Filter::tcpdump_to_db(@arguments);

Create a new tcpdump_to_db object, taking command-line arguments.

  set_defaults
    $filter->set_defaults();

Internal: set up defaults.

  parse_options
    $filter->parse_options(@ARGV);

Internal: parse command-line arguments.

  setup
    $filter->setup();

Internal: setup, parse headers.

  _conv_time
    $daytime = $self->_conv_time($raw);

Convert tcpdump h:mm:ss.SS format to absolute seconds.

  run
    $filter->run();

Internal: run over each rows.

AUTHOR and COPYRIGHT
Copyright (C) 1991-2018 by John Heidemann <johnh@isi.edu>

This program is distributed under terms of the GNU general public license, version 2. See the file COPYING with the distribution for details.