softflowd
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convtime.h New user-friendly time specification code from OpenSSH/Kevin Steves Oct 30, 2002
daemon.c - (djm) A bunch of changes necessary to support building on Solaris … Apr 16, 2004
freelist.c Add bidirectional flow (RFC5103) support in IPFIX. Fix the compile wa… Oct 5, 2014
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softflowd.8 Added support for the pflog datalink type and fixed some typos Mar 24, 2017
softflowd.c New implementation of IPFIX/Netflow v9 for supporting VLAN and Mac-ad… Aug 5, 2017
softflowd.h New implementation of IPFIX/Netflow v9 for supporting VLAN and Mac-ad… Aug 5, 2017
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README

Welcome to softflowd, a flow-based network monitor.

Introduction
------------

softflowd listens promiscuously on a network interface and semi-statefully
tracks network flows. These flows can be reported using NetFlow version 1, 5 
or 9 datagrams. softflowd is fully IPv6 capable: it can track IPv6 flows and 
export to IPv6 hosts.

More details about softflowd's function and usage may be found in the
supplied manpages, which you can view prior to installation using

/usr/bin/nroff -c -mandoc softflowd.8 | less
/usr/bin/nroff -c -mandoc softflowctl.8 | less

If you are in need of a NetFlow collector, you may be interested in 
softflowd's companion project "flowd" (http://www.mindrot.org/flowd.html). 
flowd is a NetFlow collector that is maintained in parallel with
softflowd and includes a few handy features, such as the ability
to filter flows it receives as well as Perl and Python APIs to its
storage format. NB. You don't have to use flowd: any NetFlow compatible 
collector should work with softflowd. An example Perl collector is included 
for testing purposes as collector.pl, but it doesn't yet support NetFlow v.9

Installing
----------

Building softflowd should be as simple as typing:

./configure
make
make install

Unfortunately some systems like to make life complicated. Things work
fine on the systems that I develop and test on (OpenBSD and Linux).
There is peliminary support for Solaris 9 (i.e. it compiled), but no
testing on this platform has been performed.

Licensing
---------

Softflowd is licensed under a two-term BSD license (see the source
files for details). The code in sys-tree.h is Copyright Niels Provos
<provos@citi.umich.edu> and comes straight from OpenBSD CVS, convtime.c
comes is Copyright Kevin Steves and comes from OpenSSH (misc.c). Both
of these files are licensed under two-term BSD licenses too. strlcpy.c,
strlcat.c and closefrom.c also come from OpenBSD CVS and are Copyright
Todd C. Miller. Please refer to the LICENSE file for full details.

Reporting Bugs
--------------

Please report bugs in softflowd to http://bugzilla.mindrot.org/ If you
find a security bug, please report it directly by email. If you have any
feedback or questions, please email me:

Contributing
------------

Softflowd has an extensive TODO list of interesting features, large and
small, that are waiting to be implemented. If you are interested in
helping, please contact me.

The latest source code may be obtained from Google Code:
http://code.google.com/p/softflowd/

Damien Miller <djm@mindrot.org>