Version 1.3.1 NOV ??

Complete rewrite of the TCP state machine, now handles flows larger
than 4GiB.


Version 1.3.0 SEP 30 2012 

Release for end of FY2012, includes bug fixes, better support for
autoconf, DFXML standardizations, and the ability to compile under
mingw for Windows (that was a LOT of work).

Version 1.2.7 May 24 2012 (GIT)

I am pleased to announce the release of tcpflow version 1.2.7

Version 1.2.7 offers two significant features over previous versions
relating to the processing of the -r and the new -R options.

  -r file1.pcap - This option specifies a pcap file to be read. 
                  New with version 1.2.7, the -r flag may be
                  repeated any number of times.

  -R file0.pcap - This option, new with version 1.2.7, allows a file
                  to be specified that was captured in time *before*
                  the file specified with -r. This option allows TCP
                  sessions that started in file0.pcap and which
                  continued into file1.pcap to be properly
                  started. This option is useful when some external
                  process makes packet capture files at regular
                  intervals and then the files are reassembled
                  later. Typically these files result from tcpdump run
                  with the -w or -C options.


Verison 1.2.7 can be downloaded from github:

  $ git clone git://github.com/simsong/tcpflow.git
  $ cd tcpflow
  $ sh bootstrap.sh
  $ ./configure
  $ make

or from:

  $ https://github.com/downloads/simsong/tcpflow/tcpflow-1.2.7.tar.gz

================================================================

Version 1.2 March 15 2012 (SVN )

I am pleased to announce the release of tcpflow version 1.2.

Version 1.2 is the first to include post-processing of TCP connections
integrated directly into the tcpflow program itself. post-processing
is optional and is performed on a per-connection basis when the
connection is closed. 

The following post-processing method methods are currently defined.

 -FM - Compute the MD5 hash value of every stream on close. Currently
       MD5 hashes are only computed for TCP streams that contain
       packets transmitted contigiously. -FM processing can happen
       even when output is suppressed. The MD5 is written into the
       DFXML file. 

 -AH - Detect Email/HTTP responses and separate headers from
       body. This requires that the output files be captured.

       If the output file is
          208.111.153.175.00080-192.168.001.064.37314,

       Then the post-processing will create the files:
          208.111.153.175.00080-192.168.001.064.37314-HTTP
          208.111.153.175.00080-192.168.001.064.37314-HTTPBODY

       If the HTTPBODY was compressed with GZIP, you may get a 
       third file as well:

          208.111.153.175.00080-192.168.001.064.37314-HTTPBODY-GZIP

       Additional information about these streams, such as their MD5
       hash value, is also written to the DFXML file

These features are all present in Version 1.2.2, which is available
now for download from http://afflib.org/


Version 1.1.0 19 January 2012 (SVN 8118)

I am pleased to announce the release of tcpflow version 1.1.

Version 1.1 represents a significant rewrite of tcpflow. All users are
encouraged to upgrade.

Significant changes include:

* Entire code base migrated to C++ ; code generally
  improved. tcpflow's original hash table has been replaced with a
  tr1::unordered_map which should offer significantly more
  scalability. 

* tcpflow now automatically expires out old connections. This finally
  end the program's memory-hogging problem. (You can disable this
  behavior with -P, which makes tcpflow run faster because it never
  cleans up after itself. That's fine if you are working with less
  than a million connections.)

* Multiple connections with the same (source/destination) are now
  detected and stored in different files. This is significant, as the
  previous implementation would make a single file 1-2GB in length if
  you the same host/port pairs with two different flows. Additional
  files have the same filename and a "c0001", "c0002" appended.

* Filenames may now be prefixed with either the ISO8601 time or a Unix
  timestamp  indicating the time that the connection was first seen.

* tcpflow will now save a DFXML file containing information for each
  flow that it reconstructs.

* The following new options are now implemented:

  -o outdir --- now works (previously was not implemented)
  -X xmfile --- now reports execution results in a DFXML
                file. (Version 1.1 will include complete notion in the XML file of
                every TCP connection as a DFXML <fileobject>
  -Fc       --- Every file has the 'cXXXX' postfix, rather than just
                the files with duplicate source/destination.
  -Ft       --- Every file has the <time_t>T prefix.
  -FT       --- Every file has an ISO8601 time prefix, 
                e.g. 2012-01-01T09:45:15Z
  -mNNNN    --- Specifies the minimum number of bytes that need to be
                skipped in a TCP connection before a new 
  -Lname    --- use the named semaphore 'name' to prevent multiple tcpflow 
                processes printing to standard output from overprinting each other.
  -P        --- do not prune the tcp connection table.


Other improvements include:

* Support for IPv6

* Support for VLANs

* The default filter which was causing problems under MacOS has been removed.

tcpflow can be downloaded from:
	http://afflib.org/
	http://afflib.org/software/tcpflow

Finally, because the previous maintainer had lost control of the old
tcpflow mailing list, a new one has been created at Google Groups. You
can subscribe at:

    http://groups.google.com/group/tcpflow-users



Version 1.0.4 November 24, 2011
* Default fitler changed to ""; previous default filter was causing problems on macs.

Version 1.0.2 September 30, 2011
* IPv6 code added

Version 1.0.0 January 2011
* Updated to support VLANs. VLAN packets are marked by hex 0x8100 following
  the destination and source mac addresses, followed by the 16-bit VLAN address,
  followed by 0x0800 marking the beginning of the traditional IP header.

Version 0.30 October 2007
* Simson Garfinkel <simsong@acm.org> is now the maintainer of this package
* Modified to set the time of each tcpflow with the time of the first packet.
* Created a regression test, so "make check" and "make distcheck" now work.
* Updated to modern autoconf tools.

Version 0.20 (February 26, 2001):

* A bug was fixed that caused out-of-order reassembly to generate
seemingly very large files on some systems (specifically, those that
support fgetpos/fsetpos).

* Bug fixed that caused the interface to be left in promiscuous mode
after tcpflow terminated

* The -r option was added, contributed by Jose M. Alcaide
<jose@we.lc.ehu.es>

* We now distribute tcpflow RPMs, thanks to a spec file submitted by
  Ross Golder <rossigee@bigfoot.com>.


Version 0.12 (April 20, 1999):

* Now compiles under IRIX, and using non-GCC compilers.

* Workaround for the Linux/libpcap bug that prevented tcpflow from
  listening to packets on the Linux loopback interface.  It's not
  perfect -- it appears impossible to install a libpcap filtering
  expression when listening to the Linux loopback interface.  Thus,
  *all* flows on that interface are recorded.  Someday I may try to
  fix either libpcap or the Linux kernel so that this workaround is
  not necessary.


Version 0.11 (April 13, 1999):

* Support for older (libc5) Linux systems (submitted by Johnny Tevessen
  <j.tevessen@gmx.net>).

* Some minor fixes.


Version 0.10 (April 12, 1999):

* First public release.