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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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+ L/ E* j% ]: X' xCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
  ?: K( U( u7 ~1 P5 U4 h1.肘um摰鋆fail2ban
. S; m! N' C) P/ [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)7 V0 j; z3 X+ E1 i
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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* z, V3 N2 z6 k6 d
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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# _1 G( [' J: c3 I
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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0 [8 o  @& l/ ~, F, {+ G% i6 ^vi /etc/yum.repos.d/CentOS-Base.repo
( r( n8 Y6 d4 u2 R  b2 u冽敺乩誑銝閮剖嚗
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$ Q: z0 a7 n5 F+ u; i[atrpms]# K; I% E% R9 s2 d" w. X8 [
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms- G4 h+ L7 X3 V2 R. F& ]
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
! B+ ]+ W2 A% w5 t. f: i- t* Hgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
6 G: t# b( ^: E. j5 I* Lgpgcheck=1  Q' j! T1 a  J) x" H" @
enabled=19 G; T3 a$ q+ \; _; ]: x

5 Z# x7 b# x' }- G7 {2. 閮剖fail2ban
6 a! w- ?& b- a, j1 \( A銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf  }: c' U' M& }) F
vi /etc/fail2ban/fail2ban.conf
& Y5 J* ^8 ^6 ?7 C! R2 @靽格 logtarget :
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  1. #閮剔8 N2 D, r0 ]; e
  2. #logtarget = SYSLOG1 X+ q4 D  i9 J& g$ B# P# [$ y" @3 x
  3. #隤踵游
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  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔
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  2. #backend = auto
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  3. #隤踵游
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  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
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  1. [ssh-iptables]0 g! Q! K, U3 V. y
  2. #臬血5 u4 y3 d! T; V! p8 q* G
  3. enabled  = true9 d  P' P5 W. x* c9 p/ i9 N
  4. #瞈曉蝔梧雿輻券閮剔喳8 z( a7 [  |  a
  5. filter   = sshd
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  6. #iptables閮剖; b& Z5 o. V, n' F0 n/ V4 P
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
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  9.            sendmail-whois[name=SSH, [email protected], [email protected]]; ^3 e9 t% T# z$ ~( V

  10. " [# S- R) L3 n4 w% a+ B) D
  11. #閬閮瑼
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  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅  C' [, @# v+ w* i+ }6 E. K
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬; f; `' Q5 T! |. I9 R% j2 H
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- l) S. z6 `& n/ X, I
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
7 W. k7 X( W; R$ y vi /etc/init.d/fail2ban7 }# [: T& x0 l5 c, C# i% j5 r6 b
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {! `5 u! N9 W+ a. I" b) O  L0 M- O
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid7 e% y/ F9 ^1 y. U3 [7 A
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban. G- E7 M3 X& j
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?5 O& m% _4 ~( @9 y
  8.     fi3 K: J. h7 `/ O# U& D
  9.     if [ $RETVAL -eq 0 ]; then+ o: b" M# ]4 r* v( b- `- d, ~
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success: Y3 A- t6 i* y0 V
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
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  14.         echo_failure/ i' @, m9 V4 \9 F0 ]* I+ z2 H- z
  15.     fi
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  16. % U+ p- v/ O7 G! ]
  17.     echo1 N3 S% J8 k2 ~7 |
  18.     return $RETVAL  M9 f! k# t: A. T  V) K
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗1 F' z+ I+ ~/ X* h# L% M' K
  1. stop() {! G3 n# K; `3 C6 f; p
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "- ?# T) H" \, r
  3.     getpid
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  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null4 W1 _+ P4 f, ^& E9 n) {
  8.     sleep 1
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  9.     getpid
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  10.     if [ -z "$pid" ]; then
    # w3 S. {$ y1 G' X  ^& ^" }
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success  m% B) O, B, x# K& o0 ~( G
  13.     else
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  14.         echo_failure& O; O* c- w/ B0 W5 n& {
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  16.     else
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  17.         echo_failure
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  18.     fi( T) \: v# V! ~+ {$ V( _6 I3 `. E+ Y: b
  19.     echo9 v. K' P: \/ k; k  }% g7 j: ]
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨( j* b+ I/ Z4 ]& Z" t

2 ^2 o+ n- s! ]$ c5 N: I+ Hchkconfig --add fail2ban
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2 U" r1 l' Y% J" hp.s
  h# X4 L; Y5 E' L/ k' u. ^4 c& q隞乩 :
- }' P; F* h4 e! p3 d$ k5 thttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
2 I; A- H: E5 ]2 b7 {- q/ mhttp://www.vixual.net/blog/archives/252: Y/ C6 H+ x3 n5 `

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