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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 ) a8 N8 U/ ]1 G0 O

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6 U% X/ D" C, A1 f6 s8 \- rCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗) L$ a2 i" _  ]: `3 B$ v, r
1.肘um摰鋆fail2ban) I  ?# j! ?0 H+ O3 k
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)4 p$ Y/ n3 `$ C

5 a5 B* ~) s+ ^. u2 c9 N& ?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$ R" G' Q5 I1 g: D4 e

5 W2 Y& J; P/ G! qyum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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* p8 W. \4 w6 v) l隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo
0 k3 ]% u! \3 n1 h, L冽敺乩誑銝閮剖嚗
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[atrpms]
1 o1 p2 U- n& c! F$ Qname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
/ {# t% {6 C7 x1 `" Jbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
  k  v0 n% i& e- g$ E3 jgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms( ~, L+ d, {- B/ z* g" h& i1 A1 g
gpgcheck=1
; N# C. {% M, j( u; M" Wenabled=1
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2. 閮剖fail2ban
* s* G5 D! Q2 m: J' n銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf7 c  _! F! l$ C: T3 q2 }
vi /etc/fail2ban/fail2ban.conf% P1 Z" {- [4 g/ d% ?$ u5 Q0 ^
靽格 logtarget :
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  1. #閮剔
    0 o1 V( }; q3 z/ C7 C# f
  2. #logtarget = SYSLOG
    2 k" T( Y) S% I1 E# |% W
  3. #隤踵游
    8 e$ Z* R# m5 n( z, I
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)/ l: h6 n7 d4 h: K* \0 c
  1. #閮剔
    ; V, X$ ]! N3 I9 K$ e" l4 N$ z% ]
  2. #backend = auto 6 b* W1 n- K2 L: F6 p1 z  B
  3. #隤踵游
    # ~9 ~+ T: `! {9 a% E
  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1 X. b+ C0 B- Z% ?# n5 r
  1. [ssh-iptables]
    . O! ?* |. Z' q1 c5 k# _9 o; C
  2. #臬血# Q. T! y* K9 q- l
  3. enabled  = true1 L: }! b8 [  g" [
  4. #瞈曉蝔梧雿輻券閮剔喳
    8 ]* E: k5 [9 h( X( {! T: h6 s& t
  5. filter   = sshd
      l- ?4 t# N! k/ y1 \( q& |9 o
  6. #iptables閮剖
    , ~, J; I. o5 ^/ V  G& G
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    9 V/ l) d! x) A0 S9 S
  8.            #潛餅撖靽∟身摰/ i$ }: Z" m4 c$ ^
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]7 ?) S, t- d& I/ U

  10. 2 Y9 [5 [- K5 K
  11. #閬閮瑼: ^& v; N" u. A7 v
  12. logpath  = /var/log/secure4 g1 m/ Q' M6 p6 i0 d  t2 l
  13. #擃閰阡航炊甈⊥
    / h  W: T; T& y' ^- o
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅$ m( g3 Y# r( {- d# q
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
; j# p4 [% X2 Y9 z- z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
, K* F  F! e4 j5 k憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆2 _$ G7 Y4 R( E1 j: V
vi /etc/init.d/fail2ban0 ?; g' b( W" y9 x8 g1 v
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗6 m7 |* ?; \  S% S6 I$ m. k- |
  1. start() {% N: y2 }1 F8 f: l! k5 S% K8 [
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: ", B$ V  r$ G* j9 u2 c3 I
  3.     getpid8 x- K4 T7 d- _- F7 U
  4.     if [ -z "$pid" ]; then# g7 v* a, v8 Y3 ^& h( T" }6 l
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban4 [4 ]: M! h6 e' m& Q+ V
  6.         $FAIL2BAN -x start > /dev/null
    ; e/ h0 F: [4 v6 z; S* ^
  7.         RETVAL=$?$ S8 g" ^% y4 K4 v, M0 S
  8.     fi9 ~) H6 M" L7 K1 t; H
  9.     if [ $RETVAL -eq 0 ]; then
    # f, i* ^2 K% n, O; r' c
  10.         touch /var/lock/subsys/fail2ban
    3 x) a; J1 @7 c
  11.         echo_success# ]5 M3 H3 U  p  D
  12.         /sbin/service iptables restart # reloads previously banned ip's
    * H6 W, G3 g3 Q9 B7 h5 C
  13.     else
    : N* B& U! t; e1 }
  14.         echo_failure2 t9 T6 Y$ ^8 b5 n
  15.     fi# q6 V/ B6 j) Q) {
  16. ' Y1 s- h% M1 S, b$ O) K
  17.     echo. t  G  F5 N3 D" L  h: }1 l
  18.     return $RETVAL* g9 M5 _2 S4 @
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗7 a: L5 j: x; v$ s/ C# `/ J7 F
  1. stop() {) v" |! u  k' W7 H  _
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "7 c  ~* c5 V7 p& \' }# L  c
  3.     getpid
    # Z( Y4 l& Y( A
  4.     RETVAL=$?* T& K7 V& B5 Q9 x
  5.     if [ -n "$pid" ]; then3 m8 @7 W3 n, O
  6.        /sbin/service iptables save # saves banned ip's
    ! g# F; i# |& o5 C8 y( \
  7.         $FAIL2BAN stop > /dev/null: u" k7 A% l$ I8 y0 L
  8.     sleep 1
    ( B' g3 r& ^2 t. c
  9.     getpid
    7 l8 s: u5 R1 A( [
  10.     if [ -z "$pid" ]; then
    ' [/ Y! |# Y& Q6 r9 o  b0 u
  11.         rm -f /var/lock/subsys/fail2ban" I7 m- t" m0 p: V7 a9 n' Y! W
  12.         echo_success& b) q( {. C' G9 ?7 b
  13.     else# @  @' Q* F) [( G$ A$ M* G
  14.         echo_failure
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  15.     fi
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  16.     else1 @, f$ x# X2 l- a' e" \4 r
  17.         echo_failure
    0 o" k7 a( X6 V- M& S$ c
  18.     fi
    ; Q. x! [2 m% d
  19.     echo5 G2 {! `# g+ C
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban) P2 }6 S5 @  h

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隞乩 :
& I  D( w" M( H' @; r/ g. _http://blog.pulipuli.info/2011/07/centosfail2ban.html  : @: F+ @, ]! k; P" i2 D9 U% t
http://www.vixual.net/blog/archives/252
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