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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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# |: W: r' p! n) |. jCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
, _6 g- p3 I1 y2 @0 D' d3 U1.肘um摰鋆fail2ban
9 I& Y4 T5 M" X/ h/ Eyum -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 ^) k7 z" ^5 A- C- b' _2 o& v: T& \7 U
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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 i6 s* y/ m* }5 f) S
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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
! W9 x- Z  w7 |& k. h  m冽敺乩誑銝閮剖嚗
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[atrpms]
9 A; R6 {& Q) d6 o  l5 e& aname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
) r' m+ O* W0 ?: @" K. U& v. bbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
* O5 A; Z: x4 E3 ~" ~gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
( B" [$ x8 \9 f/ vgpgcheck=1: p7 d' z$ U- x- g8 r
enabled=1, S6 q$ S! ^3 Y, D: h9 C' f3 M
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2. 閮剖fail2ban2 k7 U: x9 z+ e3 Z1 T6 Q' ]/ Y
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf, o1 y/ y  g7 z$ W9 V" V
vi /etc/fail2ban/fail2ban.conf
# |5 T, ?: l$ q  Y+ C靽格 logtarget :0 f0 \0 g+ S# R; D
  1. #閮剔
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  2. #logtarget = SYSLOG
    8 |9 ^& y8 |. Y- j
  3. #隤踵游2 i' x" _9 U, _5 S5 U) E# |% m
  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( ~. \, V1 @. D
  2. #backend = auto
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  3. #隤踵游
    0 ?. s% a! J3 I: i, o/ f0 d
  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
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  1. [ssh-iptables]
    ; `/ A0 f# D' y5 O5 B
  2. #臬血
    * s& g1 E" O- }! ]2 b
  3. enabled  = true5 b' Z- Z- Q$ _1 n3 r  m: h
  4. #瞈曉蝔梧雿輻券閮剔喳
    ; _9 n& [! e- S! b
  5. filter   = sshd- x% `8 s3 W9 v9 F1 K' K! w
  6. #iptables閮剖7 i+ A  D; k/ n; F- s6 A2 B$ r
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]# i! e3 t# C4 r+ n- A
  8.            #潛餅撖靽∟身摰9 s# k4 H/ |0 N4 q: i- t+ @0 U
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]: K* [: j( U* p

  10. $ x) I- p" w$ c# c+ y% f: U
  11. #閬閮瑼) T' u9 U5 r0 U& X% p+ N
  12. logpath  = /var/log/secure- J' a+ k% f! P% q, H5 S* F! R; N
  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1 }! e" q; z. n  E& ~- O
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
( `- u7 e; d* t  j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- n; t# b7 D( v! b( ^5 J  {
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆$ {: A+ q) C2 [
vi /etc/init.d/fail2ban
( I6 B0 p% y3 O  s; }; X. U曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗3 v0 }( P! n# A% q
  1. start() {+ [) M6 X+ I2 X  w
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid
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  4.     if [ -z "$pid" ]; then
    & @" F3 N. e. N; ~3 v' h
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    # A* b" l3 E% g. ^7 a
  6.         $FAIL2BAN -x start > /dev/null3 t+ }5 V/ Y( D4 K* S% k' j; f
  7.         RETVAL=$?% |- ^, `9 s0 o- g9 ^! n
  8.     fi2 `3 y6 D  Z& f; a) S  q
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success! m" V6 u. w, o: v* t' U
  12.         /sbin/service iptables restart # reloads previously banned ip's. h2 l/ H" R; G- K8 B
  13.     else" e; a1 u) t$ f! s  Z/ b
  14.         echo_failure; r, ~3 z! ]7 A$ V
  15.     fi/ w6 d2 o# V4 I2 e
  16. , Z# V% u# a8 p% U" b0 \
  17.     echo8 d& S8 l0 E8 k% W/ w
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗( w, }) `- f. f5 E. E
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    # \% m; e: _0 }' k8 u( E
  3.     getpid
    1 B- j& S# w+ o. A; L9 s. k
  4.     RETVAL=$?) L% S$ z! h: z4 s  T+ [
  5.     if [ -n "$pid" ]; then2 b1 h/ }: c$ `2 O0 V( }7 f2 l
  6.        /sbin/service iptables save # saves banned ip's- l* D. M* S4 ]( z) o* E
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 15 y$ H* m& C& L1 s3 T
  9.     getpid
    # N. [4 a5 |1 }+ E
  10.     if [ -z "$pid" ]; then/ c9 W/ y8 ^) {5 k! _
  11.         rm -f /var/lock/subsys/fail2ban8 l8 ^! C4 }  Z/ V2 K
  12.         echo_success: t' m* ]; M% p! Z
  13.     else& ^1 ^6 W1 s- H. Z8 r0 E6 z; l8 d/ e
  14.         echo_failure3 {+ Y* A% ]6 Z3 k  B
  15.     fi; }; t# Y" \/ V" l- E9 f( `1 X
  16.     else$ N/ J) d  Z( B: x% n% D
  17.         echo_failure
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  18.     fi# ~9 o( ?: s3 @! ~8 ?  p
  19.     echo" w' e) g4 v3 [4 w
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban4 l" ~' E- q. `+ m: t

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p.s
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http://blog.pulipuli.info/2011/07/centosfail2ban.html  ( O7 j$ }# X# A; E$ w" Y
http://www.vixual.net/blog/archives/252
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