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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 |甇摨閬 |梯璅∪
砍敺 IT_man 2016-4-9 22:36 蝺刻摩   H2 K* y; O6 E9 k8 P: `. |

' ]  d/ T/ }8 J: @6 T" q- l" u4 m+ j啣:
6 J2 S* F( J5 I' U# L6 r2 LCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
! M7 Q- ~. U- v! ^1.肘um摰鋆fail2ban
& A9 B' s" u& D: F# }. Kyum -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6 ~+ `$ ^) P6 v1 S
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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! p$ F, A' p9 r- s  e
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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0 r3 H- s# U+ @: D, evi /etc/yum.repos.d/CentOS-Base.repo7 N7 v# T) j6 A- ~, h" \
冽敺乩誑銝閮剖嚗) Y8 w, `/ e8 R+ Y

1 d5 D' @. q( J9 `, G/ \[atrpms]
# A: H8 p, u* q: p( `- ]8 fname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
0 \& ^  @7 n: i1 W" @5 @4 Gbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable# M$ ]3 _! P  ~
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms% R4 h0 ^! x* n, R) k9 ~( G. G& y+ U
gpgcheck=1. Z; `5 }6 R3 C9 ^
enabled=15 B0 h0 F6 L6 w: t& U  g

* M1 I1 y; y: }3 ]% |! l$ t! Y2. 閮剖fail2ban. Y1 r5 g5 b5 v+ G" C
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
4 d9 V7 Q6 x% k" ?1 t- @6 K8 B$ Lvi /etc/fail2ban/fail2ban.conf  D  P( ]. U6 e9 W) s1 M* B! M
靽格 logtarget :
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  1. #閮剔" v. |& b+ |) f4 U6 N4 Y! s
  2. #logtarget = SYSLOG
      d1 ?& r/ w  l3 a, U- V( m" |
  3. #隤踵游  q& T$ u+ X* e( I  v5 N2 V
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)3 L: B2 Z3 k, d% @* n
  1. #閮剔1 C" A7 P1 o! Z+ ^7 ?
  2. #backend = auto
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  3. #隤踵游/ n4 x. S! v8 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" O7 D# D1 f" @  v2 f
  1. [ssh-iptables]) Y" Z6 L5 |# Z/ r7 e$ k6 A8 n
  2. #臬血
    ! \8 }+ J+ v. ~$ ]+ B
  3. enabled  = true
    5 R: r" h: j" ]" m% T6 h" B
  4. #瞈曉蝔梧雿輻券閮剔喳
    ; T$ I7 ?' |9 A6 b: f$ h/ H
  5. filter   = sshd& a* ^$ M# v2 e/ s* e% Q  b8 W9 \" M4 y
  6. #iptables閮剖, w( n5 y2 M( z; d; s9 c: H0 f( }7 V
  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, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. 1 \) g( F7 l* m$ u
  11. #閬閮瑼0 z& T; Q. X' T2 Q" B, s# j9 l5 ~
  12. logpath  = /var/log/secure7 l& x0 P; _: f9 w- J" @# `- M) g
  13. #擃閰阡航炊甈⊥4 }9 A+ k0 [  R$ ~: `
  14. maxretry = 2
    * C! O6 \. h$ P) u! r
  15. #餅嚗-1銵函內瘞訾餅
    & T$ n# |1 e8 C' k0 m% C
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬& f/ Z& a& X6 K( C
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
2 O, r7 V" j- ]5 O; T憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆3 y3 D( b3 e: j4 H5 j7 J
vi /etc/init.d/fail2ban+ E. Y* r6 z- K, r% V% J. r, r9 [, b
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗1 ?5 D3 v0 w7 j  I, k
  1. start() {. @% A1 c9 Y' t7 s; x& a7 Y
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid* \% s/ k+ x6 b5 K! T
  4.     if [ -z "$pid" ]; then- p% J! J7 v; _+ r& I8 p) y+ g
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success- {: l; l, L9 M4 L. k
  12.         /sbin/service iptables restart # reloads previously banned ip's
    1 S& C( i. @& B2 o, D9 R5 B
  13.     else7 `4 m+ `2 P$ y) x. h0 m2 e( t/ O4 M6 w
  14.         echo_failure% P! m0 M4 m! A& ~, r
  15.     fi
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  16. ) G1 ]6 A2 `' ~5 L5 q  }
  17.     echo4 n9 ?3 [- O/ ~$ W5 F
  18.     return $RETVAL
    2 y4 C* M. i) l
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗8 {+ J8 F# k' Z7 s' Y9 U. i
  1. stop() {* _* ]' c* ]5 L  c7 N' \5 Z9 Y0 A
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "" k! U8 N9 K* J* c
  3.     getpid/ R! k0 k4 c9 |! o3 Q$ g8 ~, B
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's* B- X  i8 @- J# [
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
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  9.     getpid* i* a" Y& W1 C* E7 T
  10.     if [ -z "$pid" ]; then9 J/ i5 |; P( p4 y! \/ Z- {
  11.         rm -f /var/lock/subsys/fail2ban
    9 m) M5 y8 f7 e* }
  12.         echo_success
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  13.     else
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  14.         echo_failure
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  15.     fi
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  16.     else
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  17.         echo_failure4 I: v/ V% s4 W$ G6 x+ }
  18.     fi
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  19.     echo/ R, M9 x2 O+ p$ s: {
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨: ~; d( B- E6 g  v8 i, K6 f
# B* P* Z+ z7 Y2 b4 Y. Z/ g7 d
chkconfig --add fail2ban
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隞乩 :
' Z& g- R1 V: {# ]$ Whttp://blog.pulipuli.info/2011/07/centosfail2ban.html  2 z7 k: h# u: R
http://www.vixual.net/blog/archives/252
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