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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   X9 w. c' U# M; A
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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3 R$ I& }' j8 @# D
1.肘um摰鋆fail2ban/ r! \' D3 p3 n$ @$ X- t6 ~3 _4 V
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)2 y& K0 q1 h* x$ j7 }1 O3 @# Z9 N

! P8 s1 }/ W% h4 p# h* P3 Y8 k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
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( Z* X9 g6 i" [/ r& ^: I- Iyum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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5 Z& Q! w9 e* Q% h隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗9 E0 |8 Q- n- J' Q( q# X0 \

; U- E% S% U' K4 Qvi /etc/yum.repos.d/CentOS-Base.repo
9 ]7 L9 |+ O9 G冽敺乩誑銝閮剖嚗. n; @6 B5 R8 ~, Q+ |

' F( b) `( [: |! f6 E( F[atrpms]
4 J1 ^$ Y% ~) D* ?name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
) N1 O5 R- Y3 R6 ^% f! Obaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable  o& P+ M% ]% |' `- S+ M
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms7 i0 @0 e- C, h1 F, Q
gpgcheck=1* B& U* ~4 p+ a0 x' t$ p8 U( I
enabled=1! X. Z* u4 ]& x% o
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2. 閮剖fail2ban
2 l) j- c+ E  K( U1 `) C5 z, M( |銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf* }# @9 a9 }. B( c+ A# G3 t
vi /etc/fail2ban/fail2ban.conf
7 I# j  _( ?; n! P靽格 logtarget :, J0 Q, n1 d- h: P
  1. #閮剔
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  2. #logtarget = SYSLOG# Z$ c7 F# d6 L: j! C9 N( W
  3. #隤踵游/ X% t' Y+ b$ c; k4 a2 h" i
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼); M+ r* d4 v; n) N; W
  1. #閮剔
    # `- h) U6 f, |* a! v4 s
  2. #backend = auto
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  3. #隤踵游
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  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: E; ]  a$ x. X6 x& l- q
  1. [ssh-iptables]
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  2. #臬血
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  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳5 |8 f" U# B3 m1 ^' V
  5. filter   = sshd5 d; V; v! }) ?' y1 j7 B+ `
  6. #iptables閮剖9 K4 C. Q# j5 P& U
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]* _1 M; Q! m6 E8 Q* k  E, q% c4 q' B
  8.            #潛餅撖靽∟身摰& x2 s7 h. E  m5 w
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. : [+ B( w" u/ u: ^3 d1 r
  11. #閬閮瑼6 z) x# ?8 g8 k6 ]. }2 j
  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' C, ?- P: d7 e& H! g
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬  X* Y' Z. l- j. a8 q
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
; }! Q7 X3 K$ ]( K# p6 s" d憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
& ?4 X2 t" Z# s  v/ D3 s vi /etc/init.d/fail2ban% y  E6 S( z+ Z; F4 {4 n
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: "
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  3.     getpid
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  4.     if [ -z "$pid" ]; then6 t5 w3 Q4 B! G& E9 H5 v& _
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban$ D; o0 q' Q4 T& _7 x7 H( H
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then. S' H7 R% F; Y2 n: y
  10.         touch /var/lock/subsys/fail2ban- f7 q1 g$ C8 p# Y) P
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else4 t3 O+ n+ N* U" T! O, l
  14.         echo_failure" ~0 P' f% _8 [7 _5 \2 H9 s
  15.     fi! h& h1 M+ ]' K1 I3 M: V: E; j

  16. 4 D; i: f4 e. C
  17.     echo4 I. i/ z( l  t( h
  18.     return $RETVAL% M* E8 p0 D* x; N( N1 K+ y
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {, M' B, o& h+ o& B2 |. d
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid
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  4.     RETVAL=$?6 e# z/ H1 `5 G* }& w% q9 ]
  5.     if [ -n "$pid" ]; then1 J, b, m8 T- w4 J: @
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
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  9.     getpid7 `& b/ j; u- q" {* w7 n
  10.     if [ -z "$pid" ]; then7 u, F  k! P! M
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else; u' ?9 b( q1 N
  14.         echo_failure6 D1 e) H/ G* a9 \) C2 O
  15.     fi
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  16.     else
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  17.         echo_failure0 Z- e0 g$ B" t) d; d- {7 s
  18.     fi0 x* f" Q2 Q1 J7 N7 w( b
  19.     echo
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  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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. Z, y+ c* A6 _chkconfig --add fail2ban8 B7 I' E4 k) u3 i3 q
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隞乩 :" p7 ?8 s" @6 B$ H; Q5 g
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
, N8 c( e+ L% J/ B- phttp://www.vixual.net/blog/archives/252
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