Les systèmes de détection d intrusions
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Les systèmes de détection d'intrusions

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64 pages
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Les systèmes de détection d'intrusions David Burgermeister, Jonathan Krier Date de publication : 22/07/2006 Date de mise à jour : 22/07/2006 Sites : http://dbprog.developpez.com http://krierjon.developpez.com Sommaire I. Introduction _____________________________________________________5 II. Les différents types d'attaques _____________________________________6 1) Anatomie d’une attaque __________________________________ 6 2) Les attaques réseaux ____________________________________ 7 i. Les techniques de scan ________________________________________________ 7 ii. IP Spoofing _________________________________________________________ 7 iii. ARP Spoofing (ou ARP Redirect) _________________________________________ 8 iv. DNS Spoofing________________________________________________________ 8 v. Fragments attacks ____________________________________________________ 9 vi. TCP Session Hijacking _________________________________________________ 9 3) Les attaques applicatives ________________________________ 10 i. Les problèmes de configuration_________________________________________ 10 ii. Les bugs___________________________________________________________ 10 iii. Les buffer overflows__________________________________________________ 10 iv. Les scripts _________________________________________________________ 10 v. Les injections SQL ___________________________________________________ 11 vi. ...

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Publié par
Publié le 14 août 2011
Nombre de lectures 186
Langue Français

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   
     !"!!#     $ %  !"!!#  
 &    
  
'(' )%'('
 
 
 
  
      
                        '  *   ++++++++++++++++++++++++++++++++++++++++++++++++ " ' ,- &. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ " '  +++++++++++++++++++++++++++++++++++++++++/0- &. 1 /0- 02 3 '  3 +++++++4& &. +++++++++++++++++++++++++++++++++++++++++++++++++ 5 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 6 '  ) '   678- &  9%)  +++++++++++++++++++++++++++++++++++++++++++++++++       '  :!     . +++++++++++++++++++++++++++++++++++++++++ '  :! ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++  + '  .. .; :! ++++++++++++++++++++++++++++++++++++++++++++++++++ '  :! ++++++++++++++++++++++++++++++++  ++++++++++++++ +++++++++++ '  % &< +++++++++++++++++++++++++++++++++++++++++++++++++++ :: ' =    :: +++++++++++++++++++++++++++++++++++++++++++++++++++   !     "    
            $ ##   %&!  '     > 1,&2 ++++++++++++++++++++++++++++++ :? '     > @ A B 14,&2 +++++++++++++++++++ :?  '  ++++++++++++++++++    >   C 19,&2 :? '     > @  +++++++++++++++++++++++++ :? B '     > 1,-&2 +++++++++++++++++++++++++++++ :D '     > @ ) B 1,&,-&2 +++++++++++++++ :E '  .; :E ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ '    :E ++++++++++++++++++++++++++++++++++++++   '     '  :# +++++++++++++++++++++++++++++++>   1 2 '  :" 2++++++++++++++++++++++++++>  1/  '  :3   ++++++++++++++++++++++++++ ++++++++++++++++++++   *( )   '  '  :6  > 4,& +++++++++++++++++++++++++++++++++++++++++++++++ '  ++++++++++++++++++++++++++++++++++++++++++++++++ :- * ' 8  ,& +++++++++++++++++++++++++++++++++++++++++++++   +   "     - ,'  &! '  D  ,& +++++++++++++++++++++++++++++++++++++++++++++++++++++ '  D     ,& +++++++++++++++++++++++++++++++++++++++++ ' 7* > D +++++++++++++++++++ +++++++++++++++++++++++++++++ ' 7  E *  > +++++++++++++++++++++++++++++++++++++++++++++++++    ./   % &!   
 
 
   !"  #     +&! 0 +&( 1    '  " +++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++ ' , 3 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ' 8. +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 6 ' FA 6 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ' 8    +++++++++++++++++++++++++++++++++++++++++++ ?! '   /&F ?: ++++++++++++++++++++++++++++++++++++++++++++++++++++  +&! 1 2  '  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ?? ' , ?D +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ '  ?D8.   +++++++++++++++++++++++++++++++++++++++++++++++++++++++ ' FA ?D ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ '  ?E8    ++++++++++++++ +++++++++++++++++++++++++++++  .#  3 2 "  +&( 1      " +&( 1 -&  &!   4 1  56. '  ++++++++++++++++++++++++++ ?" +++++++++++++++++++++++++++++++ ' , ?3 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ .  +++++++++++++++++++++++++++++++++++++++++++++++++++++++ ?3 ' 8   ' 8    +++++++++++++++++++++++++++++++++++++++++++ ?3   4&! 1 4 * '  +++++++++++++++++++++++++++++++++++++ ?6 ++++++++++++++++++++ ' , ?6 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ '  D!8. +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 4&! 1 894   '  D! ++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++ ' , D: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ * .  # 4&!    &! 4$: 1 (   ;&! 1 &!      
  $   &&  %      6 '22    ,.( <+  "   " ,.( .    " +  "    8       6 1 5#= 4,,( 5 * >=     6 1 5#= ?,( 5 * >=  7  8    5 *     
 
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    
 
 
   "   7 
  
'()*   + )( &, 
& 7 )' @# >2 ? )'  * %)'  A - ( * %)'  ;' - A - (  " )'  2$ - A  " )'  ' - .9  ""     ') " . "7 
- .  
'/  0         
 
D
&B &      .  %       ,' 8    .*     %        *'     > *         '   G      H.A    .            *            .    '   8 *    .    .      A  $     * A *           '   /          .. . $       *          .*'  =         C      .     * A $ > '    
 
E
 
&&B  ## $ %   >.*                I ' /  *   .  I $  .     ' 8> *         *   @ > > * B         *    '   J     *  I    ' 8AH    %  .       K   A       .  A   A 178- J-  ,-2   $  .   '  
      5*  @  E - B     *     *   * .*  - - - - -('  G          · (: 1     >.    >  ; / 4& )'   >.      >..      A     L   4              $ >   4'  -   ;  A    4) *     .      '     .;)   &4=- M)  * $ A     > '  · ( 1   .     '  *    .   *    I         ' J    >.     >  .  *   H'  · ( 1 >            . ' J  *  $     C $     $   1A     72'  · () 1    $   *        '   ($C 1      '       ·     *             >A       '   /  *       >..    *     ' F ..   A      $ '      ..     '    
 
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      8  >*      .  A   $  '  058:   .  ( .*   A  >   ..     N    '  G ** *  '  
  )            * $  '        *           *  A     1A   3!78-    977-2' - *    *               * >      E->    > *'  , A     *  ' ,   *     *    . .      O   . ' P    *        · 12   $   A        78-      ' &>  $       K    .' 8      . '  ·   ..     &Q4  > >    ' 8             >    A     /8 1*2   O >   ' RL $       . *   '  ·   S=/& 4J  5,4         058   78-      .    .    $  *I' 8    . *   &Q4       ..'  ..            . 78-    *I'  ·   >..        .  $ > 1  2'   *  *             '  ·    .      .' 8 $    >HI  * 177 7& =&& T2         *     *    *'   
0*  >         '   
 + (     > ,- >  '  
                                          : # 18?.   2         ,   :6#6' -  058         ,     * 058'  "
5   .       *  * ,-' 8 *  I     >.     ,- 1  *     A2'     A   *   .  * ,-      * 1A  2' RL $       .   ,- ..   * >     .     @  B'  8       .   ,- ..              * H  $ > .' , A . A         ·  ) 1*  $         * ,-' 8 *  .    %   %  '  · 8) 1  *  $   * 0,- A  .  .    '  *  > .    A  C        I  O  H'  
 '0+ ( 1 '0+ 02      . >    '  5  L $         .    '        * *> O      >       '  .   I * >,- .            '     ..    .    /0-   ' 8 * . *> .     /0-   * * > ,- >     '   /0-     .  $  >'  
" 3 (    .  .  A *I 4& H$H *  .  ,-     '  5   $    ,    ' RL $  .  >    .   .  A'     A A *  ..  *'  ·  1!+ .' ()   4&                     ,-'  4& 8 -  $      . .' 8 . .    >  >  4& C    $    4&      > ,->  1A  ;;;''2'        .   '  · !+ &! #) 1 *     .   ,-' G   .     L   4&      ,-'  > *I   > ,- $  >    >.      . *       .  *I' >*   $    >. 1 .. 
 
3
 
  
2           4&     ..    *   4&  ' 0*  J * *    H    &   $   .   4&       '
" 4(* 5        *        *  . ,-'  5           A >.     ..  *    . .'    A  >*   . ,-  I '        .  *      * ,-' /.      * *   ..'    >*       A   .   *  .  .. '    .   *      >*' 8    .    A     >*  '       >*   .    A  A * ,-    *    1#3    058   ,-2   * >     '  A *    ..  A 78-'   *     . *>     ' <  A *   .   .   *    *  ...  A > ' =    .    >A  A > U     %   %  .;        >*'  
" $-+  675(        *     .A 78- .         '  5   C . .. * $         *  $     A       '               *>  * >.     1     A2      >   ' -  .    *    ,-       >    * 78-    ' F     A 78-  *    %       '   
                                          J .;  H.   .    * .  .A      .*' ,  .  H.'  6
       *      .          .' 7.       .  *   '  
  89*  (   ,    *   A .   ' F     >  .  .' 8H     .  . >A   1A    . >     2'        N    . > ' J  . >   N > $  .     % >   >A' 8> *         .    .      .'  
  8(    $          $ >A  .' , >     >A >   $     ' G   .  .        >   .     '   
  8 ":    .. .;           ' , >      >A > ? ' $ 8   $     >A         %*>$  '   >      I    >  >  .  >      ..     . $    >' G         >A    $  '   
"     - ; 1A  - -9- /&-2  >A         ' 8 *>  * 1'' *>       2  .  N        C'   >A *  >A  . $   * >..  .        >    ;'    
                                          ?    N   *     J A      1  JA  '  G&  =. M;  A2' J   I    )    $    '  :!
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