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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4 x# |  O" @& f# A+ E
1.肘um摰鋆fail2ban
6 I0 }( O6 n4 e; X$ zyum -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6 H4 h& ~0 k. E

6 K7 y. F3 P: [6 fyum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: W- I) t+ x* b4 n7 K
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vi /etc/yum.repos.d/CentOS-Base.repo
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$ q1 I* S. X; P/ S  ?9 S$ b
[atrpms]; h& B, F: i2 a6 T( \
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms( j  _) U, a* e  `9 t
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable' u" a% \$ h6 Q$ a) \2 X$ x9 c3 u
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
& q; E* X. L- I. B, q' u; s; |gpgcheck=1
; F+ |# q7 z% a+ k( lenabled=1( G! W% y. z  a8 A+ p

! @. v; f# {8 @4 W7 r7 W( D2. 閮剖fail2ban7 }4 y. v$ ^7 e# Q/ n  ]0 j5 Z
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf0 P+ }9 Z1 k. S, B3 A8 o9 Y4 j" ]: O
vi /etc/fail2ban/fail2ban.conf
# _! d! T# w. ?/ X3 B靽格 logtarget :
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  1. #閮剔
    + k6 x; q2 ^) [% ~$ T) u; |9 }
  2. #logtarget = SYSLOG3 V& y6 b% r; i7 @/ [' S- E3 C$ _
  3. #隤踵游
    $ c3 |0 f, n9 y8 b' M1 W1 ^) |1 d4 H
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)- p7 q$ c8 S% G! c
  1. #閮剔
    # z$ o* S) c( }; V; b
  2. #backend = auto
    0 \/ W0 w- l% N4 Z: d# Y
  3. #隤踵游
    , R4 u: l" n/ r+ \9 w# ~
  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5 f+ G& C- S2 J
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳% N; }) e6 U# b* \5 }8 i! O' z: H
  5. filter   = sshd
    + \' e& l+ c4 \% E& V+ {
  6. #iptables閮剖
    2 k5 H2 I: Z& }, k$ |
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    # \7 V: m5 q7 Y
  8.            #潛餅撖靽∟身摰! O1 {' R0 v' y5 Z3 `4 g5 I+ \: [
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
    . \; ^6 Z+ c4 w7 B% `
  10. " ^- C0 ]$ @$ E
  11. #閬閮瑼; R! c) H' p$ m4 {
  12. logpath  = /var/log/secure
    " P/ f1 ~8 x9 t2 ^6 p% h* ]% \
  13. #擃閰阡航炊甈⊥
    " A$ d& a- `6 Z' Y+ L
  14. maxretry = 2
    + \! m+ [. O* C1 c7 q; _' ]
  15. #餅嚗-1銵函內瘞訾餅
    3 j4 K5 |5 |& U1 B
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬9 c4 ^1 A; e' N/ b9 ^% K5 H* g
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  ?( j, u: B4 y/ W- @! @
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
, l5 E, t; a9 w  v) F vi /etc/init.d/fail2ban
1 [! C# B9 ~  e曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {7 E7 f" D9 I0 x' o) J* x+ _) ?0 e3 \
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "# F" c( N* Z" j- U
  3.     getpid0 \4 Q& T3 X% Q" q0 ^7 B
  4.     if [ -z "$pid" ]; then+ T3 d. y; C) j; u! a# t
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban8 M# z. ?  ]! P% ?. y8 e
  6.         $FAIL2BAN -x start > /dev/null6 C% a6 J+ ^! ^* M" N2 s! K
  7.         RETVAL=$?
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  8.     fi) U/ I- L2 S" G1 b) r) Q
  9.     if [ $RETVAL -eq 0 ]; then3 R- f% W' P* C- B6 |+ ^8 {$ k+ p/ D
  10.         touch /var/lock/subsys/fail2ban, F! h. h; j+ [& o7 d2 p
  11.         echo_success
    % R7 A4 F! H0 z7 c0 u" G
  12.         /sbin/service iptables restart # reloads previously banned ip's
      T! ]& C  A0 B% c
  13.     else- l3 V* Y/ M9 p7 n! R* H
  14.         echo_failure0 N$ [/ r$ N; k/ c$ G5 c
  15.     fi$ {; y8 o" M, S5 ]' `# r5 q

  16. # y0 w$ w, |  n: T
  17.     echo3 H6 ]! D. r% P5 U  w
  18.     return $RETVAL; [) m; W' X5 o5 S, `% r
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗8 z) t, k) i- }( E' w5 u
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid1 W9 X& t, m# A! a  N8 X3 ^
  4.     RETVAL=$?4 N1 C1 D/ }! b/ O% c. [* P: q
  5.     if [ -n "$pid" ]; then
    . ~6 w; e, @# |4 d. G( j
  6.        /sbin/service iptables save # saves banned ip's0 D/ }, N5 v3 J. @! u* I' h
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
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  9.     getpid
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  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban8 O, k. _+ G. u0 l
  12.         echo_success
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  13.     else  b+ M) W. M$ t6 A# j
  14.         echo_failure
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  15.     fi
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  16.     else
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  17.         echo_failure' M" t$ ]8 _: u% N4 \/ f) o
  18.     fi0 U" n$ ^/ T, M6 W) Y; L: y
  19.     echo7 n6 p( m/ V6 J# O6 v7 R
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨# W; @+ d( R( O8 n. [) g/ Y
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chkconfig --add fail2ban
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p.s
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http://blog.pulipuli.info/2011/07/centosfail2ban.html  + Q; ?1 e( J- F9 ~* n" I0 B- ~9 L% r
http://www.vixual.net/blog/archives/252
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