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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   k- a. }8 k5 b$ R: ~
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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% Y- {: J2 C7 S) H4 @6 e4 O. X4 Q
1.肘um摰鋆fail2ban
3 M6 K7 }7 Q4 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)$ P: Z1 h) ^: u+ |" [, q
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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8 A7 d2 Y% Q9 }9 w

; z) w! a' T+ yyum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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! G" Z1 C! ^! A; Z) `) F隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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8 c  O, R5 j3 @2 w0 uvi /etc/yum.repos.d/CentOS-Base.repo
% Q2 K! F6 K6 h+ C$ S冽敺乩誑銝閮剖嚗& y9 o- C) d( J* X2 l
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[atrpms]
$ c1 e3 k+ _' g4 H6 sname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
& B( ~/ U" }# L& b5 vbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
9 q" c; b. J1 R8 A* N9 sgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms: C( J+ m! ?' b6 b# _
gpgcheck=13 p6 _; ?6 f7 w0 N) p/ z
enabled=1
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2. 閮剖fail2ban; Y; `5 s" X) w
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
+ X, @  r7 Q- w7 n* n& Cvi /etc/fail2ban/fail2ban.conf  S4 [& J! D: N# {3 p- V7 t
靽格 logtarget :
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  1. #閮剔3 v8 [# y- K6 V0 [& t( O8 [2 I* b
  2. #logtarget = SYSLOG; w( l8 T. q# O
  3. #隤踵游% w7 a' g$ R1 x% i0 O3 Z0 p  p
  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
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  2. #backend = auto - T+ p$ @2 n: |" P0 ?3 s! c
  3. #隤踵游) j8 z' L8 J* L# e: I/ T; P
  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7 j, H0 g2 Z) ~# J8 Z
  1. [ssh-iptables], k6 ]! b1 s+ n
  2. #臬血( z- q5 B# ~7 V7 S
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd* z9 m# I5 ~* j* B
  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
      X+ o, C/ l$ _4 ^: m
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. $ |! T* B3 F) K  J+ r
  11. #閬閮瑼7 }3 E8 b* w( ?' S% r
  12. logpath  = /var/log/secure7 j$ J( r9 c- I# ?4 N
  13. #擃閰阡航炊甈⊥: M# {3 G  N3 P4 C" x9 O& t
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅& e) c; r. ]- i# X
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬2 v, U  [4 ^6 y
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
( i$ L5 L# M" D( v+ O: a憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆; `0 U" B. f4 Q: A
vi /etc/init.d/fail2ban
1 }" c( h9 `3 C  ?曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗. V/ f2 r' g" k, p# }. M
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid) T! s! H' y! x- Y8 ?2 l
  4.     if [ -z "$pid" ]; then, K+ A! S* J% R, W  k
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban. k' w* @( N* v0 i/ l! A
  6.         $FAIL2BAN -x start > /dev/null7 D" P2 j( |2 X1 ?6 z; o
  7.         RETVAL=$?$ q" P8 A: F# k2 y5 ^! a! N0 N
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then( a' J5 {! Z2 R: t
  10.         touch /var/lock/subsys/fail2ban( H- o: J: b+ K" {1 P- k7 G: \
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's  Q4 _, \1 J* O4 ~
  13.     else% B+ K; j3 z8 `' }* h- U; A. ^
  14.         echo_failure  o! Q7 V/ N* d4 k# N( k
  15.     fi
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  16.   }' B) f8 B. ]% I3 k
  17.     echo3 j6 _; r7 a1 I3 e
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {* R" \& U8 d- K1 V& B  \4 |" s
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid1 H% p0 v$ H$ f
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's2 L% y& Z+ b3 g* L; Y# w9 J4 e
  7.         $FAIL2BAN stop > /dev/null3 Q5 T/ W5 x* o
  8.     sleep 1
    6 u% \4 Q0 n: U6 }5 s9 ^8 {
  9.     getpid
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  10.     if [ -z "$pid" ]; then& ?0 c( M: ~' w: ^
  11.         rm -f /var/lock/subsys/fail2ban( n; g: G8 d5 Y2 Q. |& k
  12.         echo_success
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  13.     else
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  14.         echo_failure
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  15.     fi: [' o% K5 {& J2 g0 a/ N7 W4 m
  16.     else
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  17.         echo_failure! Z+ f% ?% x$ V
  18.     fi
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  19.     echo  g  r# w/ K9 m# e) }
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨  Z. _. w9 t7 g1 ^% R
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chkconfig --add fail2ban
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p.s
* K. E, b% k1 g5 u! j6 \) U& z隞乩 :
$ v  z7 r4 S4 Q# Lhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  + w# e/ s2 V0 o2 l5 s
http://www.vixual.net/blog/archives/252
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