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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 / D8 t. y7 U1 N9 r. [2 m; K
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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* ^, F- ~, H8 |; g
1.肘um摰鋆fail2ban. a  O3 S2 m3 }! `' A+ X9 x
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)6 ^; r# |1 d/ f# Q$ e
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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! \4 K' i! z/ s- }, R" c4 a4 K" m2 j
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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$ z% u8 g, q1 r' v! @% w' D
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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
* b1 o& ~$ [7 \# Q冽敺乩誑銝閮剖嚗! ]. M' ?6 H7 |/ Q4 R+ P/ s
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[atrpms]
1 I1 [1 t# U' n$ X* _$ Kname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
. I) P1 Y! I' T9 u; F8 a( Bbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable! m7 J# X1 @$ T; E  H$ H
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
* b9 H" y: C# O$ b- v# agpgcheck=1
7 }/ C8 w  a7 q" ?3 i9 Q9 Y2 S. zenabled=1& K7 k2 D+ q6 K/ g" G( c% m) a' y

: i( z( I2 I0 ^, Q% h; j5 v7 Q2. 閮剖fail2ban
+ X& W! I: i9 G0 f5 {, r: i' \" \! L銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf, Y; B  Y( R1 e6 g) W
vi /etc/fail2ban/fail2ban.conf
! m+ E( F% X' x8 |: A' ~; _9 v" E靽格 logtarget :7 Z; ~# \" I3 m& {$ c/ U
  1. #閮剔
    4 D3 Q" _  }$ `+ T
  2. #logtarget = SYSLOG
    0 g  M6 ?+ h* d, h+ |! S
  3. #隤踵游% A+ ^/ @* [0 k) @
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)* N  ?8 @$ ~6 F
  1. #閮剔
    . l  A- z9 ]; z2 {0 u  l* ^
  2. #backend = auto
    9 r/ w% }0 p  Y" ?) \/ n7 [; N1 V
  3. #隤踵游0 Y- H' V8 }* ^' W
  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8 M) P, w. a0 E) q& b
  1. [ssh-iptables]
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  2. #臬血
    4 J! J) Z* R" L( _2 a& y$ G3 G
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
    3 L, l: S2 T9 ~% |# o
  5. filter   = sshd
    8 x5 X1 r0 X& Y6 u
  6. #iptables閮剖3 G* t; V8 z3 [" t& k
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    1 \; O: L1 w! u; D0 F% [. T; q
  8.            #潛餅撖靽∟身摰1 r8 l5 g) G6 l4 v0 C' X
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
    4 R" K6 d- q$ W! ?6 t6 D: T

  10. / l9 B2 P/ m- y7 Q- b
  11. #閬閮瑼' L  J& E4 W& K* R& |
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅7 M5 {3 w% R* z8 V+ d9 j
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
- b9 J/ D& E/ g! F+ d4 u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 c/ X5 d+ r+ e3 }2 [: c! q- \憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
/ Z. r1 S; u8 X. u$ E* {& J vi /etc/init.d/fail2ban
7 @# D7 E3 o: N% K. V  x曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "7 o* l; D9 B" H8 C- F7 i1 J6 j" Z2 ~
  3.     getpid* G! ~2 h- m  b4 O( s& e
  4.     if [ -z "$pid" ]; then
    ! ?& M. @( e) [. u
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    & `. \- O- ?( Z. j- _# ~5 X
  6.         $FAIL2BAN -x start > /dev/null/ i" ?& u9 s1 Y# u1 |' q
  7.         RETVAL=$?, o) j  Y/ }1 Q# s7 F
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
    & v; v% p% Q. n" k
  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's
    $ ^+ M) ?( \1 c' u# M! p
  13.     else! R+ k- @( `, h# D* r: Q8 @
  14.         echo_failure
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  15.     fi
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  16. 5 W$ t# r, s" {+ X( ^
  17.     echo, V) r* `/ {' D
  18.     return $RETVAL8 I' K* y6 i7 x5 H
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: ". L) z8 Y; r$ L+ e+ X
  3.     getpid1 U' @% q+ Z# w5 x) o" z  h
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's
      X! E9 T% d4 Y' b
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1  u1 ?' E# F/ r; Q
  9.     getpid4 k( U9 Y0 w' a9 @
  10.     if [ -z "$pid" ]; then: D' l4 [, |- a) Y% G! B
  11.         rm -f /var/lock/subsys/fail2ban; v4 W4 s4 N) R8 f# W. F
  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_failure
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  18.     fi7 q8 k7 U6 }; j/ _" x4 x
  19.     echo" P& j0 w- @+ ]. B+ b
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨3 M! ?% l2 l* I$ i+ C
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chkconfig --add fail2ban0 _$ i1 o: `6 Q- I* j

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隞乩 :
2 v1 d  e( \2 T+ yhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
3 Z* X/ j+ V9 _9 r# Dhttp://www.vixual.net/blog/archives/252
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