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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
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' k* m9 t+ d& a% e* J. _CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
2 H! S( S- n8 \, T& |! [/ D2 i7 O1.肘um摰鋆fail2ban7 c( h; I1 u3 s, K# [5 n/ J' u
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)- z+ U- V/ V' m1 `/ T* ?/ Y
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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( K; F! C) F+ e, M
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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
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo$ }" E, G0 B1 g: N& ^' i% o
冽敺乩誑銝閮剖嚗
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[atrpms]: j" U" ^3 k# b# G% Q
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
0 W: Q* W. ^4 ]- d( D$ v# tbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
2 s1 [! A* a' dgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
& h' l$ V' ]" E, u$ S* ogpgcheck=1
. }; B6 T' U3 w: H# `" Wenabled=1+ P: h4 G0 G! \7 L7 D
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2. 閮剖fail2ban1 M8 x# B: a; T) X5 ?
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf4 }, J1 n$ {8 i/ I# j/ z
vi /etc/fail2ban/fail2ban.conf
" q1 P  z8 m. `& ]! O5 n靽格 logtarget :1 X7 q* \$ X1 ~# b- n% |1 ]
  1. #閮剔
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  2. #logtarget = SYSLOG
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  3. #隤踵游6 {# Y- N5 B+ I2 k; K+ H
  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7 s; h0 I- M4 Z! q
  2. #backend = auto % k8 u9 a* ]" G1 L
  3. #隤踵游
    / a& t% {" e7 Q1 h
  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6 G, \" H* b9 J9 h4 V+ @
  1. [ssh-iptables]
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  2. #臬血' B1 N: k0 p, R7 z! s0 p1 R; C1 W
  3. enabled  = true; V$ @/ P* `6 t" ~! R
  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd
    / ?) |- `0 B! V  @6 r
  6. #iptables閮剖
    % T$ P; H5 ~( r6 ^# g& l
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]' ]7 \& `+ x" p+ v% x
  8.            #潛餅撖靽∟身摰# V( O, b" v5 M' N
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. . B4 S2 p- }- B/ K2 B
  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; ~7 l0 o9 b) z5 s2 r- A* |: y: x
  15. #餅嚗-1銵函內瘞訾餅/ N" j* U9 M: c: P3 W( T( q8 \
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬" j! ~+ L, L/ Z. u3 s
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
! H) i$ P7 l2 E' L7 V1 ^" ?憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆2 X; X; h9 h, f, n. _4 B' w
vi /etc/init.d/fail2ban
+ {* w, D2 p. Y9 d/ Y9 u  X曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗: x2 S% W- J" O: K% d9 m
  1. start() {( b: p5 a4 i( \6 N) c
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "3 o" Z4 r- F5 q' M% I' a
  3.     getpid
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  4.     if [ -z "$pid" ]; then# U' c% U0 u2 E" W/ D
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban  e0 J: T2 {. z
  6.         $FAIL2BAN -x start > /dev/null. g- N$ T, o2 b: R  o
  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success% O+ F& _3 v' l! t6 `. O
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else. a8 ~2 H  L4 L3 y) Q$ a) s( _' `
  14.         echo_failure2 F  y# h9 m( z
  15.     fi% _1 M! B2 z8 `( P
  16. : d3 {2 |& |  |$ t. i* W6 }
  17.     echo
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  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "8 c- c3 ]" f9 |$ q7 |. l# p" J7 P& \5 ?
  3.     getpid/ _9 s5 ]5 a  \! y  t* Z/ D" x
  4.     RETVAL=$?0 g( q. j1 k. N; O
  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null' @$ M! a, H1 A- ]
  8.     sleep 1
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  9.     getpid
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  10.     if [ -z "$pid" ]; then( q8 |/ n2 h5 e/ r$ E0 d
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success, E/ U- U% ^/ b) [; e' ^7 ~: [2 v+ e
  13.     else
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  14.         echo_failure# ~, Z+ l7 V# i, `, B. r! v3 e% ^6 o& d
  15.     fi
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  16.     else
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  17.         echo_failure
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  18.     fi
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  19.     echo
    " }* ]7 n& [& Z7 j+ w: N3 J  ?
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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$ @  ]5 j$ }, C2 Wchkconfig --add fail2ban
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隞乩 :) Z2 W+ d9 J( X& Q- u) P
http://blog.pulipuli.info/2011/07/centosfail2ban.html  ' v. L) [. ~* z* X8 F
http://www.vixual.net/blog/archives/252
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