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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8 k3 v! r& H7 C6 c3 V/ O
1.肘um摰鋆fail2ban
9 l7 g; w' Z9 `0 oyum -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); m/ x7 `, x# i5 `0 y6 r2 ?

+ [- F" Y5 W7 y3 A9 A, e# y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) w* b) }2 O2 _: {+ j. W  T

1 }4 q9 ?. X) Wyum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+ j8 M% D9 r# V3 |( D9 _8 T! V& ^( v* m: n
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗, p  s6 n- v+ V3 d

/ A# s8 r' k7 yvi /etc/yum.repos.d/CentOS-Base.repo
4 i, M- N9 S3 |冽敺乩誑銝閮剖嚗
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[atrpms]$ r3 ^7 t9 b3 U% {9 C, {
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
( a4 [: K! n7 g( q5 Dbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable  s1 {( h4 c7 h& B
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
1 o& L. S+ a7 Q! ^# Agpgcheck=19 l2 I5 k; V" c& P: a9 t! v
enabled=1  K( ]/ y7 H( ]* m

* [5 M- A( J  s/ L6 _/ e2. 閮剖fail2ban" {& \4 |" A4 W2 u* `2 [
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
! g# v$ D3 V; `) F0 u% jvi /etc/fail2ban/fail2ban.conf& w8 q' p$ X% q* X1 k
靽格 logtarget :. ^1 d5 h# r7 D
  1. #閮剔
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  2. #logtarget = SYSLOG
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  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)/ e4 T+ s3 y) t7 Z' W$ D. b
  1. #閮剔% K1 H5 }; j$ M: m9 N( Z% k
  2. #backend = auto
    # {9 n1 ^8 u5 j2 M- D; c# l
  3. #隤踵游! O, y0 @, f& U1 M+ q+ F0 k
  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/ }$ _( m# L# b' M) u4 i$ a- m
  1. [ssh-iptables]
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  2. #臬血
    7 N2 O; y4 R& M2 w# L: z, s
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
    3 _+ _8 ~) _$ K9 Z% L8 z: u" `! D
  5. filter   = sshd- {: Y% W% ]! y* b9 m2 V1 d/ s: y
  6. #iptables閮剖
    " Q8 u3 A& c3 v0 I) ~2 @4 z9 Q
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    7 d$ ^' C% w7 R) y& U- b
  8.            #潛餅撖靽∟身摰; f& t- _) E1 l3 n
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. : l/ q3 I4 O* H$ u
  11. #閬閮瑼/ a, J* t- Y% }- j8 W
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 25 S2 |2 Q1 J  h1 J
  15. #餅嚗-1銵函內瘞訾餅
    0 M6 A. `# Y: S1 }* I) k
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
% Q) T- d& n6 `  W# |; X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
1 ^& |6 D* I: I( \憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆, X2 e! M; m& d& U3 v
vi /etc/init.d/fail2ban
6 N1 W# p7 x% ]1 Q曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
$ `" P3 ^# ^" w# t
  1. start() {5 W, z- E/ O4 Y, c8 I. h
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid0 q0 ~* C" [; T" B* o; N% g# ?# Z5 t$ M
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban0 y8 g0 _, M) v8 t, b
  6.         $FAIL2BAN -x start > /dev/null! n/ Q1 A' ]) w) z- K
  7.         RETVAL=$?
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  8.     fi9 P3 L9 n0 h2 k0 q9 I. X; m2 @0 V& d
  9.     if [ $RETVAL -eq 0 ]; then+ w' w6 n* C$ k( M! L1 B8 y+ G3 }
  10.         touch /var/lock/subsys/fail2ban' j8 H- o) _1 z6 m8 W- J9 d0 F9 r
  11.         echo_success- r  s! i5 O' o: M8 Y4 j1 e2 p. F
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else% e, ]  n( K5 ~
  14.         echo_failure
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  15.     fi2 }+ {9 O) j- @  P; x5 H
  16. 4 G9 c' T$ S* H! X$ J0 m" `
  17.     echo
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  18.     return $RETVAL
    2 [1 L9 `) }, L! w* h
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {/ i' g+ b, L0 b# D3 w6 I
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    & ?+ d/ Q8 ]; g: Y! `
  3.     getpid  A1 V$ f9 N# _+ x! m, @1 e6 A8 c* |
  4.     RETVAL=$?
    $ `+ Z, {& x5 J) E1 O; k4 o
  5.     if [ -n "$pid" ]; then
    ! r8 ]  ]- [( V; P4 Z' o
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null# O6 w& G$ W4 z7 L
  8.     sleep 1
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  9.     getpid( [, x. `; H8 [" o
  10.     if [ -z "$pid" ]; then/ i: @4 S! }( }8 o5 H& D
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else: v+ e/ G  J7 q
  14.         echo_failure& C: p! y! k: c3 s# d3 h# I  v
  15.     fi
    # Z3 v. L" ?& {
  16.     else& @8 s: x: _3 O- y
  17.         echo_failure0 A/ F2 ]+ x% m- S0 X5 T
  18.     fi
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  19.     echo; h( k/ L4 O" t* W
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨/ e! p3 f; r% M7 l6 S

/ m( K7 W4 p) ]% fchkconfig --add fail2ban
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' u+ `4 S% J3 Q6 c) Z隞乩 :
& U7 R+ R2 C9 @6 I/ G- o' shttp://blog.pulipuli.info/2011/07/centosfail2ban.html  8 X) P  z! N# K' L6 e$ y) i
http://www.vixual.net/blog/archives/252% B" H. u7 ?- x! M  O

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