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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
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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
4 W7 S/ x+ X0 B  {: _1.肘um摰鋆fail2ban
9 s4 R/ \5 j1 `0 V& z/ \" k( w* Gyum -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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0 O  z* S9 L* V5 u" X. l) G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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& ]* F7 |  W* Q+ V0 L; Ayum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  K- l& m  ?+ j6 g
# [; I; d% _3 g( [
隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗5 u7 t$ _: h, X, I

. e# F! B) P' y( }vi /etc/yum.repos.d/CentOS-Base.repo$ x/ \6 y9 B- L9 L8 H  R  V0 M
冽敺乩誑銝閮剖嚗4 J) R5 N1 V! ?3 \9 R" G; G2 C
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[atrpms]: }) V; Q7 L& b* U
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
4 t4 [5 u4 h6 y  p; |baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
5 c) I5 c7 j8 Q. Q' e0 egpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
8 L4 N& X, @2 f% k' p7 Bgpgcheck=1
$ V- c% S4 I* f) q5 a1 v$ \+ aenabled=1( b2 D+ T: l0 e+ L6 P$ e
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2. 閮剖fail2ban  Z8 c1 M3 V! S
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf2 m: r9 j" p* l* f$ m' R- @
vi /etc/fail2ban/fail2ban.conf
- H& z' `  P; c% Q; y$ h靽格 logtarget :& X" ^$ k. o  o1 h% K  F3 C
  1. #閮剔
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  2. #logtarget = SYSLOG
    - n* G; I# \; e' F+ N
  3. #隤踵游; v' `9 r+ I8 L0 _
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼); B0 l" ^5 H5 J) i  @! H6 X
  1. #閮剔
    6 z9 t8 D8 M! V, ~8 K: s
  2. #backend = auto : t& s! g* c5 z8 `
  3. #隤踵游
      d8 ^' R0 |) m0 e% s
  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# w( q) `  z% N; n* E/ h. _: m# i
  1. [ssh-iptables]4 `6 P! \9 |/ m. T0 d
  2. #臬血
    4 t3 ]/ C) y/ l: N* ~+ Z
  3. enabled  = true
      u# k  }; F$ j
  4. #瞈曉蝔梧雿輻券閮剔喳
    * w* F9 {% \/ ?! j* |& y
  5. filter   = sshd5 e% g9 h  t1 G' v8 a" l+ z, Y
  6. #iptables閮剖2 j# ~7 h- y2 a( O' q* n4 y" C
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]" `, s! s. l( N+ C1 ]9 U; `
  8.            #潛餅撖靽∟身摰
    - v, f0 n# h" s9 P5 F! ?; O5 s- u
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10.   i3 Q5 Y9 Y+ r% p+ w
  11. #閬閮瑼; Y+ D; e; r: [
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥% B6 C8 E& ]5 l: \( W  w2 z. @
  14. maxretry = 25 S& S, {2 M. ~$ v5 S- J, \: `
  15. #餅嚗-1銵函內瘞訾餅
    9 V2 ^! K  @' J; f
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
+ u7 e1 B! y: b+ b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
) `7 _( ?9 p$ P' @( B憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
" a5 g. g3 i# t8 ?( s1 S, ^ vi /etc/init.d/fail2ban& ~- r, ~& M. N; S& G+ N2 d
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
    $ B0 o5 n0 i6 p1 W: x
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
    / Y' ]; s6 t! I. Z3 {
  3.     getpid
    ' R1 K- e1 H  A0 b8 C
  4.     if [ -z "$pid" ]; then
    $ B. _. Z- S9 p5 t
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban& j0 ?% P% z) N) ^& E$ t
  6.         $FAIL2BAN -x start > /dev/null. L5 L3 W2 a5 J: W: Y  \
  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then4 u$ x1 l( Q5 J% l. b5 A3 J- @
  10.         touch /var/lock/subsys/fail2ban
    # o8 m8 A) q# j* T$ o9 |
  11.         echo_success& O2 ~* I3 c1 J% j4 B: P: g! Y5 P
  12.         /sbin/service iptables restart # reloads previously banned ip's2 a9 C( F* [: B: L- m! p' V4 C5 ?
  13.     else! |2 A" o; s" V, w" U: t
  14.         echo_failure6 w" f# X6 Q# Y' r
  15.     fi
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  16. 2 w6 W4 R$ {, h) v- k5 N: m7 i+ A: L
  17.     echo" p" W7 n- ~, v( j, z+ N+ x1 H
  18.     return $RETVAL% C1 r+ C/ j+ i/ s1 n
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗# j: `2 c4 E" ~. ?+ C+ {2 c- a
  1. stop() {) J  o# t1 r7 F0 a* E3 i
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    ! q; [4 H2 E0 b- p% p0 q2 F* J
  3.     getpid/ U9 H0 T" h0 D3 S! [/ m
  4.     RETVAL=$?/ @# U/ _, S# \& u: m3 |
  5.     if [ -n "$pid" ]; then, a' T' r% S; d4 S1 Q. z
  6.        /sbin/service iptables save # saves banned ip's" b, `' w: c0 R, T' z4 W8 W5 Z* z% J
  7.         $FAIL2BAN stop > /dev/null$ R/ C9 y* C: g( X( R2 n, o2 T
  8.     sleep 1" S' h0 ^$ d+ i1 _1 O
  9.     getpid! k) x3 |( Z  S3 Q  Z# f
  10.     if [ -z "$pid" ]; then
    ' }5 Z$ I% j& e: F; I6 d
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else1 N3 R7 _( e6 t( e. N" B  y
  14.         echo_failure' l, Y5 g$ V- M+ A+ v2 g- Q
  15.     fi
    . v& r$ c( p1 ?( A/ }$ y+ b
  16.     else7 D' l1 T/ E  o! S- ?* D2 j3 c3 o
  17.         echo_failure
    9 t3 m1 ~& C9 |
  18.     fi
    5 b9 }, r0 D( ~; L1 o
  19.     echo# A5 }; ~! B8 F9 x' u
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨9 L' e4 a- s. L; o/ }9 A* |4 Y
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chkconfig --add fail2ban
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p.s
1 g0 g0 b! n: ?  N) d3 o6 A0 d隞乩 :% b' _* E) R3 e$ A* b/ x! h
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
1 Y$ v9 Q' w5 [! U8 n, }http://www.vixual.net/blog/archives/252
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