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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 0 C) g* s; a- D* `  p% M- X
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啣:
$ W8 _5 u! ]$ NCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
# H2 E9 @% f: p1 x7 q+ H3 o. [1.肘um摰鋆fail2ban, e) W8 ^: u# _& G' \% k
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)
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0 H; S+ H: M+ v1 a' X4 K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9 n2 h; X. Y2 m& v3 I) U) i6 L
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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( m' B- J; c% J* W+ c( b/ H/ C
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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1 N- V* O) I' d) D: ?vi /etc/yum.repos.d/CentOS-Base.repo
$ g. v# k8 L& Y3 [冽敺乩誑銝閮剖嚗; }. K) F, w% M" Z8 [
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[atrpms]6 x( V1 G. C9 ]+ T9 K
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms5 V1 g* q: c2 |
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable& M6 ?+ r5 n( j3 D
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms, i: _) o6 H* M; V" g
gpgcheck=1
' C; h. i3 k; v, ~enabled=1
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2. 閮剖fail2ban, C' P+ m6 s2 J8 B. `
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
% t4 i$ L: ~( R) d* d8 Kvi /etc/fail2ban/fail2ban.conf  R# Z: ?" N# i) Y  a; J
靽格 logtarget :
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  1. #閮剔' u+ U1 j. ^( i
  2. #logtarget = SYSLOG' D7 h1 ~6 a) p/ y. u
  3. #隤踵游
    4 ]. B6 d; P9 w2 F
  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
    5 ]; Z: C+ W' l; u) Q
  2. #backend = auto
    + D7 ^* L2 F4 K" \6 g  v$ i
  3. #隤踵游
    / |% [4 R. S6 O# O. q
  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
$ C; B2 L' Z6 m. c3 i
  1. [ssh-iptables]
    & n# Q: s$ h6 n) y
  2. #臬血
    2 H0 _: S) [9 ^) ?4 i6 T% E. q# ~
  3. enabled  = true2 I5 O) w+ Z8 p4 b# _
  4. #瞈曉蝔梧雿輻券閮剔喳) y" g% s6 c7 k4 J
  5. filter   = sshd
    7 N3 v' T1 U6 w) F3 g3 q
  6. #iptables閮剖4 i8 P1 @; j; Q! L  N
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    * D) T3 q' U7 e4 Q
  8.            #潛餅撖靽∟身摰
    , l& H% F1 u! ^0 n- Y# l  ^
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. ( x# @( n' V( K: y
  11. #閬閮瑼
    . \: r8 Z$ r3 v, }: |  H$ Y
  12. logpath  = /var/log/secure8 F/ B/ L+ k$ D/ n/ e4 a9 I9 N! q
  13. #擃閰阡航炊甈⊥
    2 q5 \1 Q# p, d
  14. maxretry = 2- h9 Q+ P0 P2 n1 v
  15. #餅嚗-1銵函內瘞訾餅
    ! l3 P, R2 p6 y4 T
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬, [3 B" X$ L$ B
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
3 i( t6 ^" z6 H& |) Z- Y& U2 m0 f憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆/ _1 y/ W, O  {
vi /etc/init.d/fail2ban
: o: f& ?3 ]" k' B+ q曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
    % C: E  l( R( D$ }) U; |
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
    " \( {- ~  z: p. H* W
  3.     getpid
    ; D0 M9 _8 x+ R  v
  4.     if [ -z "$pid" ]; then
    0 B, ~" w9 A& \7 g$ Y7 B
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null! ?  J1 q3 ~/ R
  7.         RETVAL=$?
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  8.     fi
    * @" i1 Z* ^- P5 u: R; P1 T
  9.     if [ $RETVAL -eq 0 ]; then
    - F, l. A/ H9 ?9 g
  10.         touch /var/lock/subsys/fail2ban
    , V, r( i6 v' y$ ~2 @6 Y+ }
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
    * ]$ n4 h2 c7 f" K( z$ X+ Z' S
  14.         echo_failure' ], k: l( K* Y. ^1 f
  15.     fi( W/ v! }4 a  q3 c
  16. " v8 R, ^, j1 h% X
  17.     echo
    3 ?( J6 @4 I" j- _
  18.     return $RETVAL
      ]; [) T3 y$ V
  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() {$ \7 n5 {8 Y9 C% [9 e2 b/ `( H
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    " c: b* a8 S" v; J8 x- j, \
  3.     getpid
    8 W: V' M- X  x1 h" s5 h( l# @
  4.     RETVAL=$?( r& f' t, T) }+ V1 T
  5.     if [ -n "$pid" ]; then3 _* a- Y+ x8 |: K
  6.        /sbin/service iptables save # saves banned ip's+ K3 [  f" N+ S0 l! ?
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1/ L( \% u. f# ]( O. i- p1 h+ T5 Q
  9.     getpid' r7 b3 v0 f+ [' ?# z4 Z- }
  10.     if [ -z "$pid" ]; then$ _8 E8 |3 @4 l& m. Q
  11.         rm -f /var/lock/subsys/fail2ban' M, L: ]5 \% k; _; G
  12.         echo_success
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  13.     else
    # a9 r% R# v/ ~! g3 M
  14.         echo_failure
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  15.     fi4 X$ M3 [; G7 \
  16.     else
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  17.         echo_failure- w6 c, S- M2 H9 j3 F2 z# k
  18.     fi/ j7 I) b, [  a1 R' K7 Q, X
  19.     echo( y. X4 @, E0 R8 V3 r- ?
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
" x* C# f/ R. h- [$ J+ ~. i  _1 e& l& q3 I
- \1 ]2 I3 d/ O, B4 ^  N& achkconfig --add fail2ban
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隞乩 :9 n/ N( G) y. k# c9 b
http://blog.pulipuli.info/2011/07/centosfail2ban.html    P/ w9 Y$ t- s7 z  g
http://www.vixual.net/blog/archives/252% f$ t8 R' Y# `) u! k( S9 B

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