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  1. Welcome to softflowd, a flow-based network monitor.
    2. 

  2. 

  3. Introduction
    4. 

  4. ------------
    5. 

  5. 

  6. softflowd listens promiscuously on a network interface and semi-statefully
    7. 

  7. tracks network flows. These flows can be reported using NetFlow version 1, 5 
    8. 

  8. or 9 datagrams. softflowd is fully IPv6 capable: it can track IPv6 flows and 
    9. 

  9. export to IPv6 hosts.
    10. 

  10. 

  11. More details about softflowd's function and usage may be found in the
    12. 

  12. supplied manpages, which you can view prior to installation using
    13. 

  13. 

  14. /usr/bin/nroff -c -mandoc softflowd.8 | less
    15. 

  15. /usr/bin/nroff -c -mandoc softflowctl.8 | less
    16. 

  16. 

  17. If you are in need of a NetFlow collector, you may be interested in 
    18. 

  18. softflowd's companion project "flowd" (http://www.mindrot.org/flowd.html). 
    19. 

  19. flowd is a NetFlow collector that is maintained in parallel with
    20. 

  20. softflowd and includes a few handy features, such as the ability
    21. 

  21. to filter flows it receives as well as Perl and Python APIs to its
    22. 

  22. storage format. NB. You don't have to use flowd: any NetFlow compatible 
    23. 

  23. collector should work with softflowd. An example Perl collector is included 
    24. 

  24. for testing purposes as collector.pl, but it doesn't yet support NetFlow v.9
    25. 

  25. 

  26. Installing
    27. 

  27. ----------
    28. 

  28. 

  29. Building softflowd should be as simple as typing:
    30. 

  30. 

  31. ./configure
    32. 

  32. make
    33. 

  33. make install
    34. 

  34. 

  35. Unfortunately some systems like to make life complicated. Things work
    36. 

  36. fine on the systems that I develop and test on (OpenBSD and Linux).
    37. 

  37. There is peliminary support for Solaris 9 (i.e. it compiled), but no
    38. 

  38. testing on this platform has been performed.
    39. 

  39. 

  40. Licensing
    41. 

  41. ---------
    42. 

  42. 

  43. Softflowd is licensed under a two-term BSD license (see the source
    44. 

  44. files for details). The code in sys-tree.h is Copyright Niels Provos
    45. 

  45. <provos@citi.umich.edu> and comes straight from OpenBSD CVS, convtime.c
    46. 

  46. comes is Copyright Kevin Steves and comes from OpenSSH (misc.c). Both
    47. 

  47. of these files are licensed under two-term BSD licenses too. strlcpy.c,
    48. 

  48. strlcat.c and closefrom.c also come from OpenBSD CVS and are Copyright
    49. 

  49. Todd C. Miller. Please refer to the LICENSE file for full details.
    50. 

  50. 

  51. Reporting Bugs
    52. 

  52. --------------
    53. 

  53. 

  54. Please report bugs in softflowd to http://bugzilla.mindrot.org/ If you
    55. 

  55. find a security bug, please report it directly by email. If you have any
    56. 

  56. feedback or questions, please email me:
    57. 

  57. 

  58. Contributing
    59. 

  59. ------------
    60. 

  60. 

  61. Softflowd has an extensive TODO list of interesting features, large and
    62. 

  62. small, that are waiting to be implemented. If you are interested in
    63. 

  63. helping, please contact me.
    64. 

  64. 

  65. The latest source code may be obtained from Google Code:
    66. 

  66. http://code.google.com/p/softflowd/
    67. 

  67. 

  68. Damien Miller <djm@mindrot.org>
    69. 

  69. 

  70. $Id$
    71.