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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 ) Y3 }, p, }' e) q+ a# U
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啣:
4 f8 g4 E+ X* T8 ?! W5 HCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗) l  @+ k8 F  b& [$ T# F( o4 p
1.肘um摰鋆fail2ban$ P; h; a) L$ u" i; @
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)
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" ~9 l: O& o$ e( L1 Q5 L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' y: A( W( X; B) K' f

4 _: \/ t4 @8 ~+ @9 B( H' Uyum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7 O2 T# f; M: U( O  ~

4 ^& g% v6 [. V8 q- m9 `vi /etc/yum.repos.d/CentOS-Base.repo+ d3 }! v9 z% c% P1 J8 E& d; _
冽敺乩誑銝閮剖嚗
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8 Z/ {) ~- C! D: ?8 N! |% g[atrpms]& s, O, @5 k9 U, I0 R% n
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms  X) g! D9 v: k" [
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable' y3 c) S# a7 @; B" W. j
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
7 Z: r# W( \+ \& k$ Ygpgcheck=1( q! K5 S9 T) k5 g' Y- S+ {
enabled=12 K/ g. m/ @+ v: T3 P$ Q7 \/ o

- r: c9 Y1 w0 x8 _: D2. 閮剖fail2ban
% `  ?& a! Y% @6 a6 D$ Q銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf: y, f% ^3 p8 v# G: ~
vi /etc/fail2ban/fail2ban.conf
% g) v+ ~: t' x0 M' @3 |9 u靽格 logtarget :) @) c% F7 F  d/ U, F
  1. #閮剔
      E# q1 N% f  F
  2. #logtarget = SYSLOG
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  3. #隤踵游
    ) m# Y& y# `( X5 O. h7 Y0 d
  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
    ) c$ ^- w1 g+ i' |8 l, J1 l
  2. #backend = auto
    ( F  d9 y+ C- L0 a
  3. #隤踵游
    . |5 C: |1 x* T- a- i1 G
  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0 R+ B& M2 U' t! V; R6 j/ d; \
  1. [ssh-iptables]
    ( l( p" B' A/ ]0 X( `
  2. #臬血
    / G. Q0 [/ K& w. y! `8 U
  3. enabled  = true# D  O$ N' H. {# h0 X9 ~+ n2 g
  4. #瞈曉蝔梧雿輻券閮剔喳
    - e6 U! K% R% a& O0 S: G/ y* \
  5. filter   = sshd  P; B) V9 b6 p5 f( G% L8 J" R) I
  6. #iptables閮剖
    ( N" D* i# f1 e) ~$ i
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]/ A: ^) K8 R3 H  z* E
  8.            #潛餅撖靽∟身摰
    ' S+ r% ^' f/ C) z( c
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]2 V7 }6 `) F! @/ k& F( F
  10. ; I$ X# b8 g: g0 d
  11. #閬閮瑼
    ( B7 c2 H# ?0 E' F
  12. logpath  = /var/log/secure
    ( Q" v& ?- ~- H. G3 s7 a5 ^, {
  13. #擃閰阡航炊甈⊥
    2 u4 ]% P2 {: T# Z2 P! ^
  14. maxretry = 2: W+ m; M+ ^# l; h
  15. #餅嚗-1銵函內瘞訾餅  E" Y6 V" B) @) ~* @" i
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
! B5 }( D4 O6 u1 H4 P% X% ]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
9 b5 K$ ~) w; d% T憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
; M$ q, a% k, v+ E vi /etc/init.d/fail2ban
6 u9 v# p  F; K  O/ [1 G2 ]% Z曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗  b  p" A( T( e, L) J! ^
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "0 N, k$ D7 A' T
  3.     getpid$ B9 J5 [+ \$ q& Y: q& d
  4.     if [ -z "$pid" ]; then: x+ \. H: R/ I$ @
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?# z, j$ s: \& N/ |1 D! D! k
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban8 k! k" Z/ g5 U% ^2 Q
  11.         echo_success0 ^5 T! R* _$ P7 ?
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else- x, k9 ^" k( r# S7 t
  14.         echo_failure
    5 v& }' ]# L( x! Z1 ^+ t. {/ f
  15.     fi
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  16. 6 \8 T7 v% m' E6 o- F
  17.     echo, @3 e0 P/ M2 n) u. t6 a; X" G
  18.     return $RETVAL% E7 F% y. W' U4 B. e0 {
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗! I* w3 \  n8 R+ d6 O) g' o
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "% ?0 z9 q& o% f$ L- ]  r
  3.     getpid
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  4.     RETVAL=$?9 p6 {+ @# {' [
  5.     if [ -n "$pid" ]; then1 d/ i7 B* H, C1 }7 b) G( a% f
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
    . Q& z) _' l3 c6 {
  8.     sleep 1
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  9.     getpid% z( Y" P- M! Q1 U4 u  Q( o: s
  10.     if [ -z "$pid" ]; then+ B/ L& S  m6 B4 J2 O* a* k& c) J
  11.         rm -f /var/lock/subsys/fail2ban  \- C3 x: ?: ^1 X1 D) v
  12.         echo_success4 T0 t  c' |0 F
  13.     else
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  14.         echo_failure. o# o: u$ y  v- D: n/ D6 s
  15.     fi8 u. b2 J9 h% _
  16.     else3 E! E) Y7 Y3 |% Y; l/ F* V1 s
  17.         echo_failure* X* m& L7 T  J" P5 V
  18.     fi
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  19.     echo
    7 s; J! g, U1 u5 g1 a" Q) B% B
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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- d8 t: c6 ~( [( Y+ B3 K7 O; jchkconfig --add fail2ban
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隞乩 :" {! e3 j* ]8 U  m6 q
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
/ ?, K4 h! a# I  {" ahttp://www.vixual.net/blog/archives/252* }, [3 Z" a; j$ G+ T7 v7 H. I: n

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