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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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3 U9 C: t2 H$ m$ Y3 e3 [6 xCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
) B! }; `& [  q: N4 o4 }0 W8 w1.肘um摰鋆fail2ban8 R) z! b: s% K( v5 @
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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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$ I/ T5 a8 s! X3 Q! M8 }4 f: E8 r
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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atrpms7 s  s" s& }2 p) t7 b" j/ `+ h2 c
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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5 w9 ]5 D8 n' W& F# m# ivi /etc/yum.repos.d/CentOS-Base.repo
4 X# G4 A1 v; I- j冽敺乩誑銝閮剖嚗4 U! d$ w3 k9 j: n5 m2 B

, }8 Z6 M# X2 ^, z+ a[atrpms]7 X& a3 `+ q/ h  H& e; x  P% Z
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
# A7 x7 u5 t  p# M! U1 f7 X1 Cbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
! w' b7 X' i0 ~0 B/ k! U/ fgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
+ H+ k% M" V& xgpgcheck=1
/ s) N9 t& g/ Denabled=1
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: F4 Y5 q" D1 }# B2. 閮剖fail2ban3 m2 i0 {5 I* I, _
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
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靽格 logtarget :( N$ o- M) |6 z" j! r) Q2 G
  1. #閮剔6 m( f7 m1 |' n, a2 y. ~8 l
  2. #logtarget = SYSLOG0 Q: r; G+ ~+ _! X
  3. #隤踵游. o6 G  j) z. T* e
  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
    # q  @' h8 b0 B* _6 h& p+ e- i
  2. #backend = auto 1 n. M- _5 o" X0 w* ^1 H
  3. #隤踵游
    ( s" ?- T+ `! B; x
  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6 J3 z* B0 O, K! b/ x
  1. [ssh-iptables]8 Q. a+ u4 Y' r  ^, {0 E& q: l- ?& S, e
  2. #臬血4 f6 `" o$ `2 x# A) h( j! X$ C
  3. enabled  = true& p- P8 l9 x  k1 t: ^0 _' l4 U; s
  4. #瞈曉蝔梧雿輻券閮剔喳
    . q6 B6 {: K/ _8 o$ h8 n
  5. filter   = sshd
    " \- `- s4 ?* {) ?6 d1 j, F. u
  6. #iptables閮剖
    2 `! _: P3 z- P* {' G
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
    + I# G( ~; K5 b; ?' h
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]6 U9 r, z  K# [4 N  T
  10. 7 l' d$ A- v4 @# k: E4 M+ S
  11. #閬閮瑼
    ) M- M- L# U2 @$ Z1 U0 ?0 @! \$ N
  12. logpath  = /var/log/secure5 d7 O2 g( A8 l
  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
    6 j0 B. Y, N. P2 k4 ]
  15. #餅嚗-1銵函內瘞訾餅
    3 t9 _( J' R3 M4 \; \
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬9 X' Q) b9 Z/ M
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
- R: ]& g3 w! @憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
5 r  m( p0 g, k  _: Y" e vi /etc/init.d/fail2ban
% P. {$ [; Q9 }- X! `曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗% u3 f  q" I' [" s
  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" ]; then5 C( d6 f' t4 Q/ Z# g
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban1 {! `; E5 t( @2 @1 i6 |" H8 F
  6.         $FAIL2BAN -x start > /dev/null
    & \  w% R7 h/ Y  W. S$ N
  7.         RETVAL=$?
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  8.     fi- \; I, F/ H1 p6 \$ X2 ~
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success- f3 ^6 i4 s. J) Z4 d
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
    $ F8 f( F' x# V  `. w
  14.         echo_failure) Q, O' m3 T+ o9 u
  15.     fi! \0 w! X; W5 \

  16. 1 l0 V# B( o) r- U: y; r
  17.     echo/ ]: _7 u1 s" W- N  f7 w' w
  18.     return $RETVAL
    / K6 X1 y5 O: N% b, L" g
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
    3 c8 w1 e, H4 h  V& I0 m9 {
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "/ Y: X' t. j( G
  3.     getpid
    : @1 y1 ?: t5 h- a' \! d3 {; q
  4.     RETVAL=$?- ^  u& \. c8 i& V
  5.     if [ -n "$pid" ]; then) t5 b$ {4 ^$ \+ I
  6.        /sbin/service iptables save # saves banned ip's
    ! K. ]' S( v5 n: Z* S/ R( A
  7.         $FAIL2BAN stop > /dev/null) ^/ E, _/ D; C
  8.     sleep 1
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  9.     getpid
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  10.     if [ -z "$pid" ]; then/ X4 G; e# }6 k# {$ P
  11.         rm -f /var/lock/subsys/fail2ban* I: p5 m7 A  h
  12.         echo_success
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  13.     else
    ' v' i( U& n; X, \6 t+ B3 `$ ]
  14.         echo_failure5 t( V: f' e' g! t) e& G
  15.     fi
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  16.     else% O5 C! l( i  [# H' ]9 p! j
  17.         echo_failure: Q( ^. |! J5 A& ]: |7 G7 x* x
  18.     fi
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  19.     echo
    ( H  O' j4 ?- F& N% p; o' L- n
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
# p: u6 N7 R6 H. u/ N1 g: `% S1 n& G4 B+ I( |- c( T" r
chkconfig --add fail2ban
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隞乩 :
, d9 ?2 P+ i$ z/ phttp://blog.pulipuli.info/2011/07/centosfail2ban.html  ( I; u3 Q9 a% ^1 R+ K
http://www.vixual.net/blog/archives/252( w/ _* v( K* N7 P& [

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