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[脩怎] 脩怎撘瑕憟隞逵ail2ban銋摰鋆閮剖

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2016-4-9 12:53:54 | 芰閰脖 撣 |摨閬 |梯璅∪
砍敺 IT_man 2016-4-9 22:36 蝺刻摩
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啣:
' |& _6 i' R) T6 o" JCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗/ @; I' f" d+ K
1.肘um摰鋆fail2ban) w1 |5 v! J$ J& m2 t( `
yum -y install fail2ban   (yum摰鋆甇瑞閮 /var/log/yum 銝准憒閬蝣箄撌脣鋆憟隞塚臭誑剜亥岷閮瑼)+ d. \1 M8 z! }

% @, A. l& X& Y; ~+ m憒銝餈唳郊撽銝賢鋆fail2ban,暻慶um憿舐內曆啗府憟隞嗥嚗雿閬脣仿甇仿
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yum憟隞嗅澈靘瘙箏閬憒雿摰鋆憟隞嗚嗉望審ail2ban銝虫券閮剔憟隞嗅澈銝哨隞交敹亙急fail2ban憟隞嗅澈atrpms
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3 m! W3 F0 q7 c6 Y隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo( L! k% ?* @9 ^0 F3 P% n
冽敺乩誑銝閮剖嚗" h1 S) `! p$ [, p: [. Z
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[atrpms]
; g4 o/ p% ]4 W, E9 h3 s! ename=Red Hat Enterprise Linux $releasever - $basearch - ATrpms  n* ?; v" ^9 v# r4 t
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable1 ]8 C3 e! I5 I* C) M4 k4 j
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
" z8 x3 R+ h' V1 ~. j! hgpgcheck=1; O$ j% k, p3 k- Q# g) x
enabled=1, |) Y0 z9 Q. [3 W: ~9 _- G
% ^5 u+ z" l9 v" `+ v* {( ^
2. 閮剖fail2ban
/ @7 L7 U+ \. e: R銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf6 E/ q5 ]4 K( K, w$ [( _' w# S
vi /etc/fail2ban/fail2ban.conf9 S6 Q$ ~( _) f$ L, i( \
靽格 logtarget :
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  1. #閮剔
    " i* |3 `4 r8 |& V( l6 E7 h- G4 I1 T
  2. #logtarget = SYSLOG, I* c4 {8 P! {- B" @2 l: X% k
  3. #隤踵游
    & j" _+ b) h9 A/ g0 X
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)& T; u& L6 f* o" M+ \
  1. #閮剔
    2 l& n3 l" D  K( ^. u
  2. #backend = auto & O) U. Z) I% Z3 x
  3. #隤踵游
      ~$ H* y* C* f% N' i: B2 ]' X
  4. backend = gamin
銴鋆賭誨蝣
gamin烊inux憟隞嗡銝憒蝻箏雿臭誑肘um靘摰鋆摰% g/ \% i$ w+ @  l0 J
  1. [ssh-iptables]
      n. [% \; Q% q% P  U+ z3 k
  2. #臬血
    1 r$ M# m$ X7 t1 H, v5 O) P
  3. enabled  = true
    * g9 O) F4 g' B
  4. #瞈曉蝔梧雿輻券閮剔喳5 N0 D. h6 ^0 v- D
  5. filter   = sshd9 \3 e) {  R5 C) W( ?% E- I5 p0 y
  6. #iptables閮剖
    ! W6 L/ q0 c; P) x7 p
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]; E, ~  s( l$ \2 u- ?# u# j
  8.            #潛餅撖靽∟身摰
    6 v5 l& R6 F0 p  f0 \" u' q
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]+ W+ V' y5 a( \1 b# `

  10. 7 t* F, x1 P) S! }
  11. #閬閮瑼
    ( V  \) j9 _* A. H/ f
  12. logpath  = /var/log/secure) c9 j$ u6 g3 v' a" K/ R
  13. #擃閰阡航炊甈⊥
    9 @* T0 F1 _9 x5 g
  14. maxretry = 28 z2 M. g4 r' e
  15. #餅嚗-1銵函內瘞訾餅
    8 ~& R+ Y9 z/ g. e: O( D, c
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬2 H+ }( _" |8 W" k
券閮剔閮剖銝哨fail2ban瘥甈⊿啣賣箏鋡恍餅IP閮剖靘靘隤迎憒餉血箇餃亙仃鋡剌ail2ban嚗暻澆芾fail2ban啣嚗暻潭餉血臭誑蝜潛閰衣餃叫erver& ~9 a* Q2 b' W: {; B' m3 p" J
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆0 G+ a* ]$ P  Y9 d. x7 Z  W. u/ n
vi /etc/init.d/fail2ban; M; N6 W+ z! ]- d/ `0 R
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗* m! c3 O; S& q& e2 d
  1. start() {0 `! W2 R( j8 H: x
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
    : O9 U% `6 R2 R1 r7 ]
  3.     getpid  T0 G  o6 L5 p, [6 r* c
  4.     if [ -z "$pid" ]; then
    & E# [6 j) G: W* j
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?* S% Z: [) N! n& [
  8.     fi5 Q, g7 d9 A( T# Z5 Z" k  o/ y
  9.     if [ $RETVAL -eq 0 ]; then
    * o) L, l; ]3 G* {# N: n
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success- U* B5 B5 c4 p- L/ g. ~  r6 O
  12.         /sbin/service iptables restart # reloads previously banned ip's$ S9 F/ n5 w8 n# K9 y% X
  13.     else) ~$ Y9 P! f8 H1 K
  14.         echo_failure+ a2 {5 H% ], o, m6 z
  15.     fi
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  16. * `. `( R+ F; w# I. K: N
  17.     echo0 q/ e1 k0 |6 D* T- \
  18.     return $RETVAL/ q" a/ }. V/ E% V( W3 E
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗5 o3 x7 B& Z/ ?  `9 |7 l
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: ", f) k( e5 h* u2 Q* l& V0 g
  3.     getpid
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  4.     RETVAL=$?8 @8 B" G/ w9 l( D9 W
  5.     if [ -n "$pid" ]; then
    6 i) R- e( r% x) @) B! e: M
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null; k) w, }. F+ s8 D7 J
  8.     sleep 1
    . ^4 _) p: ^' U, t( \0 A  b
  9.     getpid
    7 B5 `' ^8 D! [, G' C* }
  10.     if [ -z "$pid" ]; then
    4 {' ~: S, `9 f# h. u
  11.         rm -f /var/lock/subsys/fail2ban
    2 a! }/ |- ^% |* R
  12.         echo_success% v3 T' o7 B0 y0 E- \* ^4 Y
  13.     else' A+ E0 t( p7 I' A; J3 P8 p
  14.         echo_failure) a5 o# {+ B6 |/ e
  15.     fi( l$ M: @8 g; D- u( z* i; [! e* Q
  16.     else
    # I  l. X1 d- W# S& P
  17.         echo_failure6 ?: }+ ?: P. ?3 W& k0 Z$ u
  18.     fi
    . G! k; l! @0 s4 [  C
  19.     echo7 k3 |5 G  o8 y0 C
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨" ~3 z4 I( A' L: [
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chkconfig --add fail2ban1 Q% v( M1 b" u3 s) y' \$ ~

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隞乩 :: w5 [6 O5 q8 I0 P# x. Q
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
; J' R/ x8 |0 Q2 y6 |3 R+ U* ?# khttp://www.vixual.net/blog/archives/2529 M9 ]9 q# q( Q5 c& A) A2 b

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