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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 . ~* O2 B$ t0 |5 f  r
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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0 ?; u: }% K$ `6 |
1.肘um摰鋆fail2ban- l4 y# _; v3 t/ v: H) B( N
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)% k. L! g' e, X. q

  s- G. \: j# @3 a) s+ F& G8 ]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
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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  r1 @9 p% D2 g& a7 [

( N5 U9 P: ]4 a$ p9 u' h隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗) i3 M) z& v+ }# A

4 A5 t, `% N% n; H+ Y, L: bvi /etc/yum.repos.d/CentOS-Base.repo" s6 B, A2 @2 `+ T$ m
冽敺乩誑銝閮剖嚗- T( D1 ]* T% J- t, b3 b( C- X

3 p0 e, p5 q: a) {, ~- o; z[atrpms]' v* \9 q1 ?0 o/ I+ v' M
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
) y/ S6 z: W2 P& B9 t) ]baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable" k& J" m: \! p! [+ V# b3 \& a
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms0 U- G* t+ w7 Z
gpgcheck=1
, |3 M1 _: C% ]' T7 {  j& J6 Wenabled=1
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2. 閮剖fail2ban
4 F3 l% j& T; m- F" N銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
% S( Z" n# R& h0 w: M. C4 f; ]vi /etc/fail2ban/fail2ban.conf
/ l2 o4 [0 P' ?! Q' f0 |靽格 logtarget :
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  1. #閮剔
    # h8 ^* T+ R* m- o
  2. #logtarget = SYSLOG
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  3. #隤踵游
    ' ^4 R- E& v9 T
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔8 ]$ q7 B# k3 K2 ~4 k
  2. #backend = auto
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  3. #隤踵游
    & M1 ]& [. n) w9 a
  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]
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  2. #臬血4 v# C" L5 K" X3 x1 Z% d
  3. enabled  = true
    # E+ |' n( d+ ]8 @/ v1 c# D
  4. #瞈曉蝔梧雿輻券閮剔喳% E# Q9 F+ J+ I. [8 F) a
  5. filter   = sshd
    * T8 I& Z/ b! d
  6. #iptables閮剖# f# @, d, g# D/ x/ ^) I% c- [
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]4 w" o" U, s! J
  8.            #潛餅撖靽∟身摰
    4 F; b9 k2 x# R( O, `4 i: P, F5 g
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. ) ^1 B! w! O( K5 x! @+ F% a( ^
  11. #閬閮瑼
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  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 25 J" H/ t0 h2 ?! y) m' K* z9 S
  15. #餅嚗-1銵函內瘞訾餅
    ) m4 o* r# x* `: q
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬5 ]1 ]! b0 k) S. ], U$ {0 }3 V1 R
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
4 Y+ }" x  Q* v# V憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
- G% J5 H/ F; r: k4 c$ P/ x vi /etc/init.d/fail2ban. x- t1 n; c0 a/ M2 D' w
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗8 h' X0 ?" t3 I2 x- ^5 W" A* n4 y: E
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid
    $ r0 e; J7 ]0 ?) N0 q8 |
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban$ \* }4 _3 r5 L. c. u8 o' Y
  6.         $FAIL2BAN -x start > /dev/null+ d, a4 Z5 y" P. q# _' ^. D
  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then' p  Z+ K8 W: u' I& `" C7 C
  10.         touch /var/lock/subsys/fail2ban
    - t! X& w* Q5 w$ S3 k; ^
  11.         echo_success+ w) I$ t7 P% O) k. R8 A
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else! Z+ R: T, q4 a0 N
  14.         echo_failure
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  15.     fi/ t9 n+ A  D$ J3 j
  16. 4 ]. u. j  g, i, }8 D5 x
  17.     echo4 r% @" e. f+ k% C7 E! }
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {- n$ e& t; R; w2 B* V6 t
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid0 x* T6 r1 d- B" g$ ]6 H
  4.     RETVAL=$?6 b* M2 P+ K/ X9 A& M7 J3 W
  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's* Z! C% @7 ~0 V2 z/ ?8 I3 W$ ^* L! |
  7.         $FAIL2BAN stop > /dev/null$ M3 k" h8 v% Y& n" a" V1 W) L
  8.     sleep 1$ d$ `, v  L7 ~% ^1 B& q
  9.     getpid- C3 G" u4 W0 i2 O( w2 s
  10.     if [ -z "$pid" ]; then9 W: T) D4 B: k' I/ |
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success, D0 A: v' L7 L: C  @2 I% K" M5 Y
  13.     else1 b! a# z2 n  j0 c& |
  14.         echo_failure
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  15.     fi+ U- x3 [( z+ D' x, X5 G$ U
  16.     else- m0 b9 j6 N, _8 s) K
  17.         echo_failure
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  18.     fi
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  19.     echo0 ?% F) ?2 \+ D( Z
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨# C( L0 l7 H6 F5 F+ W- M

% h8 q( p  ]* f+ S) U3 m/ T+ nchkconfig --add fail2ban
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http://blog.pulipuli.info/2011/07/centosfail2ban.html  
) s0 I$ L& v# R! i# ]9 r" @& c0 f7 lhttp://www.vixual.net/blog/archives/252
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