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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 6 X# H* b( c5 g) S& a# m
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啣:
' c) d4 ^/ c/ P, @. fCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
- _/ \9 a% c5 ?- j, E% J1.肘um摰鋆fail2ban
9 N, h* \5 e5 D4 ryum -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)% V8 ~, w, K. s+ K. ^, _/ m! h
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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: V0 V6 g+ G5 V+ v, l) c
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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
# Y) O: c8 y( W0 m5 J. g3 B
9 N/ e( u( S  M! o+ T, s; Jvi /etc/yum.repos.d/CentOS-Base.repo
1 r1 f& ~! H$ M4 Z冽敺乩誑銝閮剖嚗9 Q) C" s3 ?4 T- Y. q$ M; [  {7 {

% F3 h/ e9 G4 }# r[atrpms]
" |/ Q, ]; S) ?* N, ~& \6 Kname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
% s2 R4 w( \4 L# P5 qbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
- _/ _4 a" ]2 M+ t, Z* }5 Mgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms  D* _& ^2 q9 D" L; v- D
gpgcheck=1
2 Z0 V6 w* R  I' nenabled=13 g: Q; B6 q5 L& X4 E2 i2 L& h
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2. 閮剖fail2ban
+ O: L4 H4 c! \' M' d1 I$ Y* u- |銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
# o8 q1 c) b2 \# l9 Kvi /etc/fail2ban/fail2ban.conf- H0 J. Q; o+ W7 [2 _: i! J0 b
靽格 logtarget :
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  1. #閮剔. I1 X7 o$ `3 j  k
  2. #logtarget = SYSLOG
    # r# I$ g# o! L) Y5 [8 b. B
  3. #隤踵游
    & D5 `8 e% O: T7 J
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)$ a" W0 V: m% y/ P# e+ E4 p
  1. #閮剔. P! C% i7 W+ J( b7 L* _- X
  2. #backend = auto
    . q3 N# T0 z3 Z' M1 o7 n7 h4 w4 \
  3. #隤踵游
    + X" ?- f4 c! E
  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 a2 m, g( \8 o/ ~% _0 M- n  d- n
  1. [ssh-iptables]
    # F$ @; e! r7 [( w% V* k7 W
  2. #臬血
    5 k7 \4 w6 W, f
  3. enabled  = true
    ( Q  {1 S) n7 [/ w
  4. #瞈曉蝔梧雿輻券閮剔喳+ F1 o5 s8 ]/ p; \* R
  5. filter   = sshd/ y) [% u' `2 u1 E1 r. l9 i
  6. #iptables閮剖
    4 ^8 Q% F" S2 o1 M
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]# y# m7 k2 b6 Z. S  ~) H: M
  8.            #潛餅撖靽∟身摰; P$ s8 v3 T- t8 L: m# b
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. 2 X. ]$ }2 L3 O5 C( M7 ~4 P
  11. #閬閮瑼
    4 x8 ?# c3 K; x0 v$ Q
  12. logpath  = /var/log/secure
    % y* G0 W+ J2 R8 }. p: k
  13. #擃閰阡航炊甈⊥
    8 Y$ D* |0 q6 ^$ E5 t( v5 A
  14. maxretry = 2) y& ]  Q. w4 i$ |' ?4 r" F! S
  15. #餅嚗-1銵函內瘞訾餅, n/ o) z8 [' n" a6 i5 ]- |  n3 g
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
$ K: z- l* ?' d: w: d: A% Y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$ ~) ?# i5 y, ?  H6 M! @
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆- g+ C  k+ T4 \( ^1 l; o
vi /etc/init.d/fail2ban* t) n0 N$ N2 j, y
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗- F9 \4 }$ I: F
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid, Z# n. L7 z. {9 b6 c( N
  4.     if [ -z "$pid" ]; then0 k$ ^' u0 P. c7 `2 n" Z* U
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
      O6 K# P& H* B2 E. D  d/ t
  6.         $FAIL2BAN -x start > /dev/null$ {5 ]$ {7 D8 s8 L$ b
  7.         RETVAL=$?& ~  y6 w4 N7 ^
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then- A) }" D' H) Q* `7 \
  10.         touch /var/lock/subsys/fail2ban  g$ }, Y; F6 Y) x3 Q
  11.         echo_success! Q8 E# A2 C1 h: y  g' j
  12.         /sbin/service iptables restart # reloads previously banned ip's/ G) N7 t' O% A1 l0 i* n- l
  13.     else. O5 X$ Q/ t  |; _: r! X4 s$ v
  14.         echo_failure* M% [" x1 K/ h" t( p4 H* u7 X5 B
  15.     fi
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  16. 0 z  j3 Y0 A4 d9 C1 \6 w
  17.     echo
    / y) Y! k  C7 v% p+ a
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗% w4 _- K0 l2 M  e
  1. stop() {
    / l0 y2 c! o6 Z/ a8 I9 d& u+ Z
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    ' s, ], ]6 j6 x, W5 F, @
  3.     getpid5 ~/ @9 [1 F1 Y0 k# c* F
  4.     RETVAL=$?- p6 {' r! J2 \2 ]6 M; ]" |: u9 m+ e
  5.     if [ -n "$pid" ]; then8 _2 X! ]! N* q
  6.        /sbin/service iptables save # saves banned ip's0 C  `& |6 L; b3 s& \& y0 F/ S
  7.         $FAIL2BAN stop > /dev/null
    $ O- e: b. T9 N/ T) i/ u! o
  8.     sleep 1
    ( r: ?* K8 `5 H3 ~( j& }
  9.     getpid
    - }! j2 `& D2 I6 b0 \# L* |
  10.     if [ -z "$pid" ]; then+ e. D6 D& `: ]( S8 `# G
  11.         rm -f /var/lock/subsys/fail2ban8 z) F2 c7 ^) e/ p" I9 T4 J
  12.         echo_success5 Q" Y8 j, h/ a/ @
  13.     else
    # q' y4 O5 a3 z5 I1 r! K
  14.         echo_failure3 ^; ^& L- F) Z6 N
  15.     fi
    6 p" p0 d- ]$ f5 g4 k
  16.     else
    3 M% I2 o2 k2 j
  17.         echo_failure
    ; ^/ W1 r3 B% |) G" X9 ?- y) B0 M- T1 B
  18.     fi
    ( }3 B2 f% ^) X" n
  19.     echo
    1 M! l1 b1 h. z, }
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨* P! x3 t8 X# W2 M4 u: k( m9 ~' F

. k1 m% }8 @$ b: v% Lchkconfig --add fail2ban. |5 r7 C/ s4 |" U1 i
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% g' R6 s. J6 r: k' C8 Q; ]8 \p.s
, a6 b7 y' B% D2 d, h, M( W" }" w$ H4 P隞乩 :) W9 b. i1 @% ~$ r" c# J! @
http://blog.pulipuli.info/2011/07/centosfail2ban.html  # j2 y) z! N; b& J0 }3 b4 ~
http://www.vixual.net/blog/archives/252
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