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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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CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗6 z1 q9 j3 l% `6 D, H6 x
1.肘um摰鋆fail2ban( _/ r4 M) D% y0 |6 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)
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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( F, V5 V  N! M  L8 y8 e7 H

; `+ S2 e8 o; n4 g. K0 ]) Vyum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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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗0 B6 b4 n* N( e3 r

- J5 H+ N) A+ d+ qvi /etc/yum.repos.d/CentOS-Base.repo4 V/ l6 {( l: z
冽敺乩誑銝閮剖嚗7 K3 r5 Z1 o* O' x/ p! q

  \( `' w' |6 A+ I+ X8 |4 S) M[atrpms]
% Y; h( c" V7 c( lname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
- e' k5 V3 F1 J+ `  {' Z+ dbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
4 u1 C5 t9 k; O/ |9 s" P5 xgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
3 |  f2 A0 @; p  r0 n9 Rgpgcheck=1+ t0 e! T6 m- ^; p& S9 V: t
enabled=1
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2. 閮剖fail2ban
9 x+ `3 L2 l, E+ I. Z銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
2 S2 @  J7 n0 v# F. M' K2 qvi /etc/fail2ban/fail2ban.conf
" p! Q& p& \, ]0 M靽格 logtarget :, _7 H% ]8 d( `" I7 F& f
  1. #閮剔' N& ~1 d$ m! u3 R+ K4 {/ F1 R
  2. #logtarget = SYSLOG
      B( y+ N$ \0 r; [( a0 G
  3. #隤踵游, L+ ~& i) Y+ h1 `: \9 Y
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)) J: P* H4 ^3 W" I
  1. #閮剔5 q7 h1 X  x  M( B2 W" a
  2. #backend = auto : q- J7 h& T* g# j; }0 ?
  3. #隤踵游
    , O) j3 g* I' y+ c8 x" b7 K2 s' q. o% }
  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  L: C8 ?) q) w# |& X! k
  1. [ssh-iptables]) l; P( r; v4 r; F6 a3 [1 z$ M
  2. #臬血
    5 l8 g- R. n4 a; @' B* I3 t1 O- d
  3. enabled  = true; E9 Z# B6 _9 ?) l6 w& W
  4. #瞈曉蝔梧雿輻券閮剔喳) X# `5 Y/ N3 _5 I: J- A
  5. filter   = sshd* {5 w# D6 @/ B+ R0 }  ~* s# K
  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]- ?3 T6 K' e+ O$ ~  |
  8.            #潛餅撖靽∟身摰
    ! {  a. \  y. E( Z* \. W4 C
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. ' G5 i# l: j+ ^8 ^3 E
  11. #閬閮瑼  [$ D+ W+ U# Z+ w$ ~. k4 r
  12. logpath  = /var/log/secure+ j+ X/ {8 l9 d  \0 _$ S
  13. #擃閰阡航炊甈⊥/ L' y% B7 y" \- E
  14. maxretry = 29 G( c+ n, t- c) {7 g
  15. #餅嚗-1銵函內瘞訾餅' C4 I$ x* s/ }* X/ H) s
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
/ O3 ]' b& s1 A" F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# W. W, |( O# P
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆) |) F  U4 f  @8 ?( J
vi /etc/init.d/fail2ban
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  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "% R6 g9 \: S' s2 Q( T8 ?5 E1 p
  3.     getpid
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  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?1 q; A& m$ P  y4 D4 D# Y+ c
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's6 n$ Z! }, R, x
  13.     else$ _& g5 m( S& i9 @( p, p0 T& P# X- |
  14.         echo_failure
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  15.     fi3 \" |3 U8 m) D, T; I+ H

  16. 1 a& i: k1 Y' G/ C( @# {/ r8 U, o
  17.     echo
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  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {" v0 H* |  _* j3 ~+ P9 _* r
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "/ f- r$ W% z' f8 _6 _/ d& ]5 \
  3.     getpid( \" c, H( j+ y* I6 s7 _) {& l
  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.         $FAIL2BAN stop > /dev/null
    # p& Y8 Y4 p- `% n" y" k( I8 o8 g
  8.     sleep 1& r6 T; R3 j9 k5 {5 [- k1 a
  9.     getpid) W9 G* [- S& X/ {( N% n- f" }0 A
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else% Y" c: a4 D) m- z7 d+ E
  14.         echo_failure, \1 B. P, f$ D; n% B
  15.     fi% O  q( F/ I8 m6 I! U( l! }
  16.     else
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  17.         echo_failure, Z$ Z. s& S) G7 _/ b, d
  18.     fi
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  19.     echo6 ?8 \* y* e& X3 L$ I6 L
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨( B1 N; v  k8 ~6 u

% w/ `' u0 P/ N( b+ m/ s0 Rchkconfig --add fail2ban. v7 K, U+ d& Y% [: P' d) Y* U% d

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隞乩 :' p' {! N0 v5 P! U& ^4 ~
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
" e, j2 ]; d7 c( Ihttp://www.vixual.net/blog/archives/252
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