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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 " v5 ]4 Z4 G0 @6 _
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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
* b8 H2 l& G- ?8 t" s( a8 H" w* V3 F1.肘um摰鋆fail2ban
6 X1 ^& a1 Y5 N  e! O( V8 Jyum -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)0 v9 @! _( m" _6 K7 s( l% W1 b8 c
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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4 ?' f- W) n9 P5 J1 }' E
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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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8 J3 ?1 f1 r6 @6 p3 F隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗' K) y: |- d7 D+ T8 k
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vi /etc/yum.repos.d/CentOS-Base.repo
2 s! i: e0 A- T6 X" n& |冽敺乩誑銝閮剖嚗
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[atrpms]' c! a0 h+ n* O7 X
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms1 [$ V5 u6 ~, P4 [( O3 S) b5 w
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
4 Y% s! P- Q3 b: y7 r/ p! q( n' ~2 v4 ~gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms# p1 K4 ?' W+ w4 F9 p, `
gpgcheck=1
9 X. h1 e; x8 O$ z- @# O! denabled=1/ u4 @( p' l* q1 C

  b% g% S3 ^0 Z& ~. Q4 v2. 閮剖fail2ban
/ t6 v9 g: I. w4 r銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf0 ^/ k7 c$ [8 R3 b
vi /etc/fail2ban/fail2ban.conf
* ]; N) f% S- r% U靽格 logtarget :
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  1. #閮剔
    ( u# \# _8 i( A3 i. F
  2. #logtarget = SYSLOG# E7 e, @* j4 Z) U9 l
  3. #隤踵游
    ( B# R# S( x% I1 Y1 t
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)  c4 V$ g% s8 F9 A9 R4 Z3 U/ e5 q
  1. #閮剔- Q, A7 N3 d9 s0 E5 q9 E& ~
  2. #backend = auto
    # I8 s4 i$ z$ h' z* E
  3. #隤踵游
    7 i; P- x4 O( c6 K" Z
  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 s: d9 D2 Q+ P  d! E
  1. [ssh-iptables]6 B0 Y. q5 ?! w0 j5 Z
  2. #臬血1 u# c! k; _3 ^2 ~( h
  3. enabled  = true' |: _3 L& D1 O, K% y
  4. #瞈曉蝔梧雿輻券閮剔喳
    # m  |& @+ G" r
  5. filter   = sshd
    . ^- [. [# J  f* [
  6. #iptables閮剖
    - J0 W2 S- W$ J2 n8 a
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
      b4 a/ o/ Z3 S1 q+ `- P
  8.            #潛餅撖靽∟身摰2 F6 v3 G, \3 @1 x0 {. o+ u
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com], j# }+ y4 G. _/ r8 d

  10. 1 N# w4 t0 [0 }$ R0 X5 X% Q
  11. #閬閮瑼
    7 C4 S7 O6 j. d3 O
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥/ F9 V/ G! B. v( C
  14. maxretry = 2
    # U- r$ w: M/ \3 @7 U
  15. #餅嚗-1銵函內瘞訾餅8 d, d8 S' S7 @+ X# N: C+ r
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬$ m9 e: K  q7 \8 B$ Q: 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+ j7 ^% O" z( i6 G6 o$ J5 ?
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
4 E" m1 |' h5 f) ~0 U9 [/ f vi /etc/init.d/fail2ban
5 X" J! u0 @: x/ ~) O& l+ M7 C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: "$ {' U  f5 T; m+ ?3 }, c% `
  3.     getpid
    ! D8 T/ X8 G% z6 I  ^4 R4 p6 G1 b
  4.     if [ -z "$pid" ]; then' S/ i5 K1 D9 v; y/ @( ?- ]
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    7 ~9 e+ @+ d; e" }& o
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then6 f, g( }/ \6 Z
  10.         touch /var/lock/subsys/fail2ban9 r0 Z/ c2 j6 n* [! ?+ c. J2 o
  11.         echo_success
    % W: x* s1 q1 y+ |. H  {
  12.         /sbin/service iptables restart # reloads previously banned ip's
    ; i( t$ n7 p( i- |
  13.     else
    $ V8 \$ l) [/ V6 n: ~
  14.         echo_failure$ z& F: E  i; }8 W% t
  15.     fi0 I/ |" g, _$ Y0 O5 ?# F+ `

  16. ; s, P* ]6 l& x' F. U5 m3 |# q
  17.     echo
    5 a  g% q. l" g
  18.     return $RETVAL. r- b/ l8 M) M, \! a& m
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗7 G( \- Q5 s4 j& C$ K) _& [2 o: f
  1. stop() {4 q8 |* A( s* `6 }
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "( w4 W' U& u& o
  3.     getpid
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  4.     RETVAL=$?$ k; T5 _( M2 ]) a% S. I5 G* k# a2 L
  5.     if [ -n "$pid" ]; then8 x: U& J9 S: X% G* [
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
    # ?& W9 Y1 g, U% `
  8.     sleep 15 G8 G) R: |9 M/ ]+ k% I
  9.     getpid
    & Z1 J  x- a5 q' f. k' ^7 u$ j) X
  10.     if [ -z "$pid" ]; then
    6 `; r" B4 k8 S7 s
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
    $ }8 U1 I* N0 g5 o. l) c5 o) I
  13.     else
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  14.         echo_failure. K5 y7 ~5 K3 R1 A1 f
  15.     fi
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  16.     else
    / F' W/ n2 P+ {
  17.         echo_failure% g9 A% ?3 E. Q7 I7 R
  18.     fi# F0 b8 d: @: y. s- j& }
  19.     echo3 c7 z" h: ^4 c" I8 y
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨- ~# y3 s8 d) c+ z
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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  
4 y" A3 a' y8 T) ghttp://www.vixual.net/blog/archives/252
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