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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9 G/ i, X* d3 p
1.肘um摰鋆fail2ban6 I( N( o+ R+ g# S3 z8 G+ r4 }2 I
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)* r  {1 z0 i* ^2 ], ]0 U
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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, W7 `/ m/ m6 W! F  p
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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. q+ v0 y$ ~8 h# _
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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& V" n# ^: i; k( `! ^vi /etc/yum.repos.d/CentOS-Base.repo  {2 \5 x" [  E/ ]
冽敺乩誑銝閮剖嚗/ i" F/ A2 E; \9 s. D2 d& `
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[atrpms]: @9 x- y7 U- d
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms2 c! a: n" x+ F% A7 B) F
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
- y( X' c, I5 R+ B. v. E! [" Lgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms9 o' K* }+ o  d: F3 J
gpgcheck=12 d* K2 t) x* U& g3 l; ~) |
enabled=15 G4 U/ H4 ~) R6 s8 J6 l6 P+ r

$ P, X: W( E( M7 I* v2. 閮剖fail2ban
4 I" K/ L0 ?- R2 k$ S  @! @8 ?5 g1 \- w銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf& ?  X4 @+ v" \/ \: z
vi /etc/fail2ban/fail2ban.conf
1 s) x. U8 t% j  `$ V靽格 logtarget :
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  1. #閮剔3 m1 R+ P5 N4 [
  2. #logtarget = SYSLOG$ {! l% _8 o* X4 E3 k
  3. #隤踵游! G1 t# c+ f9 ?6 {7 m( g
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)7 e. P: \2 ]& |
  1. #閮剔
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  2. #backend = auto
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  3. #隤踵游
    ) k0 r0 f& G+ h5 A
  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 |+ r& u1 \# u, q5 }8 a- Y
  2. #臬血, u' x1 B" {( s  R  _8 G* Q& G4 E5 G3 l4 V) r
  3. enabled  = true3 L' z) t1 t& ]* z$ N
  4. #瞈曉蝔梧雿輻券閮剔喳
    / v" ]3 q( a: {% x
  5. filter   = sshd
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  6. #iptables閮剖0 l  t( v: F4 Y( D5 W8 A
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    $ L% i/ ^, H$ u- b4 Q2 N  ?
  8.            #潛餅撖靽∟身摰
    $ ]5 C& A/ K6 p  F6 O) v: C
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]2 L' d* m5 J) T" Q+ J/ _

  10. - b* j8 W0 Z: z$ T9 _
  11. #閬閮瑼
    " l2 x1 i  h& W( L
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥, i0 x' ~" f1 y2 ?$ F  H
  14. maxretry = 2, z3 _+ Q6 v1 y$ m- b' Z1 S
  15. #餅嚗-1銵函內瘞訾餅
    " P* I  ^# R& h% L  ], D
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬2 f0 a2 ]% m  q3 w
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
) t7 n1 \- M* i: O6 f憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
) D7 }' l6 Y. F! A vi /etc/init.d/fail2ban
) T8 N" v) O) I) I+ M' [. g曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗7 y9 @3 e# q) U, j: O% Z
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "# ?( R* o1 c* k3 c. _
  3.     getpid) Z% R5 g' b$ p1 M  H" F* F
  4.     if [ -z "$pid" ]; then5 s' z4 g5 s- ~8 H! z! `
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban! G  W- c$ A& }( K; h( I  t
  6.         $FAIL2BAN -x start > /dev/null2 G4 Y; ]$ ^+ a7 j; a% j) I4 O
  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban, {- T+ G$ q  a# L1 W
  11.         echo_success% {+ |4 N: c5 I  }& u# w  u+ W4 e
  12.         /sbin/service iptables restart # reloads previously banned ip's6 L9 e7 H! r9 i+ e& R
  13.     else3 C; L- j9 \" h8 X
  14.         echo_failure
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  15.     fi( m6 ~/ W  w. P# y
  16. ' a; E) @9 K9 j6 `* e" b
  17.     echo* u8 Y* A- K6 W. g
  18.     return $RETVAL" P9 `# [9 o/ L: t& C
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗# y5 ]( F4 h/ [& J8 I
  1. stop() {
    # P7 e0 K" [5 [4 |* b6 U
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "4 k3 j/ ~- Q1 Y1 m" D
  3.     getpid
    & ?4 h. i1 H# d' {' j  s% t
  4.     RETVAL=$?! @$ k  Q# ~% J3 L4 D$ L2 e3 u: j
  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/null1 A# N* \) K8 Q$ [6 ?( d* W. S
  8.     sleep 1
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  9.     getpid
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  10.     if [ -z "$pid" ]; then
    & b- `* |% }6 s9 S) \
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success( }; F6 B6 Z  p: b
  13.     else
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  14.         echo_failure4 ?1 ^6 t: i" f
  15.     fi
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  16.     else
    ( {& g% }; ]$ M) J& h5 {
  17.         echo_failure
    # |3 Q! y, H( D8 L/ `( a2 p
  18.     fi1 w, j, e4 u: I) ]( I/ v
  19.     echo" Y0 F5 R) G- v9 \9 `" M  a6 w% z
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨$ }& \3 x4 A% u: V2 M* n

, v0 C0 X& a: m! v% Y9 Hchkconfig --add fail2ban
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隞乩 :
2 Q# i+ l) w8 X0 b( k9 K) c; thttp://blog.pulipuli.info/2011/07/centosfail2ban.html  3 k- h2 [- I, T: Z8 g
http://www.vixual.net/blog/archives/252
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