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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
9 S6 i% j0 B+ x) L1.肘um摰鋆fail2ban
5 i. m% N1 ?! N: L- {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)1 k% U. d; h8 V* j# }% m

+ _9 K& y( N1 [4 ?" N8 j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% X4 Z, b4 {7 ~2 V* u3 G' m
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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( F" }; Z5 D! B! |5 Y& G
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗/ V* J, S2 ~% ]/ Z% Y! u* n6 G
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vi /etc/yum.repos.d/CentOS-Base.repo
( A* m8 J; P3 ~& d冽敺乩誑銝閮剖嚗
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[atrpms]5 j4 H0 v& h) W: l$ R
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms; o2 b* w% W( h" G" Z# S9 W, o
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
  b  B) X/ \9 J0 L! T5 }gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
9 M/ F5 D4 E# xgpgcheck=1
- n0 F0 D% G- `$ x% j) t2 Uenabled=16 s( Q  S! K0 }( l8 D/ t: s8 J

0 n& p" U1 m4 ^% M! f2. 閮剖fail2ban
- R4 K8 Z/ B4 P0 o5 @% y( r銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf% \4 a: h8 R5 z2 ^& J
vi /etc/fail2ban/fail2ban.conf
9 x  y1 P2 y* h6 x靽格 logtarget :- p* P0 F! z6 j# s/ D
  1. #閮剔
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  2. #logtarget = SYSLOG
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  3. #隤踵游" L, B$ Z2 @  |
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)( \6 {. z7 ~' i* _0 V- ]) J9 N( _( y
  1. #閮剔
    % g* g8 k& [9 F
  2. #backend = auto 4 N2 Z9 Y  A0 d% S$ ]; M
  3. #隤踵游
    & m* v& i. C! Z8 D; }5 r6 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+ {8 p9 b& @1 |1 j
  1. [ssh-iptables]3 y& {  I) t$ n8 O
  2. #臬血) s, `! \9 `- J; y
  3. enabled  = true+ V% _8 J6 B" z7 _- p$ d+ a
  4. #瞈曉蝔梧雿輻券閮剔喳* g7 Y2 ]7 e: k
  5. filter   = sshd
    ( n6 ~0 Y+ ^* R! a/ h+ ]
  6. #iptables閮剖
    : F" p0 B% h6 P1 r0 z- \+ f
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    5 m% _, q+ |2 Y
  8.            #潛餅撖靽∟身摰; I6 F3 ]) r0 |- y
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]% e3 x* D4 g$ D, d6 S7 s; g# W

  10. : [$ G5 e9 ~, Y  N* p1 [! q2 n
  11. #閬閮瑼
    ' q2 {" q( x: h
  12. logpath  = /var/log/secure
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  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
    ; I, I! M# |8 y
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬9 j& ?3 t& y0 H9 t/ ~* \( U
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
" e; k$ [) C2 J+ B憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
& c  k/ H3 O7 b& h- H- M5 u vi /etc/init.d/fail2ban
! a0 R. h5 C0 L/ p/ Y曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  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 "$pid" ]; then" k8 t% ?5 [- U+ Y& k
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban- ]6 U- E. q5 l$ L  M2 m: X
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?$ f9 b4 B. O4 r& @- e
  8.     fi/ O  n1 I; _6 e: o6 A( l1 H
  9.     if [ $RETVAL -eq 0 ]; then! F9 Q" G* |* x$ O0 ^; q7 H
  10.         touch /var/lock/subsys/fail2ban/ I# G. ]9 I* c. G( i
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else& u7 x/ w, r% Y6 g% s2 ]
  14.         echo_failure# N: z6 g8 f9 F5 w- X! W' J
  15.     fi& |$ m8 l$ C) [) [5 ^# \( N# ~
  16. : u7 m& m9 c1 Q: w& A
  17.     echo
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  18.     return $RETVAL( S; o) o" E* w* t2 }( L
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "# V4 g3 c/ m4 ]" J! O
  3.     getpid) \+ L" N. V9 A# ~: V9 x
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 17 B! h- ^. F1 i* n+ _
  9.     getpid
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  10.     if [ -z "$pid" ]; then) p! y. \: e4 D4 S4 t+ X- e
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else
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  14.         echo_failure1 N: K; C2 o* }5 `! a" |4 p
  15.     fi* m- }: i& s" w
  16.     else8 q5 X$ ?. d) I9 F
  17.         echo_failure
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  18.     fi8 g+ q6 W  o3 U1 n7 _0 [2 ]
  19.     echo: i0 {  ~/ o2 o: j# P' \
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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; [/ O# u; I& d  y+ Qchkconfig --add fail2ban
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隞乩 :. j5 B. B* s" H1 w7 S' [/ C
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
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