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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 4 y6 `1 e* b4 K* k6 `8 @& {  q
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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- ^# U( A9 b' B% n, c4 r0 B5 t/ I
1.肘um摰鋆fail2ban
" M; B; H4 ~3 ~/ v4 e6 N8 oyum -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)5 Y1 m2 M% B3 r7 |7 j1 D* k) O

8 H: H& t, ?! M) s/ {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, c5 S; ?% p6 Z7 q8 ?
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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
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' `2 b: Z/ b& [3 mvi /etc/yum.repos.d/CentOS-Base.repo% F' F# J( b* }; V. t# }
冽敺乩誑銝閮剖嚗
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% |$ b* M5 g" j" Z, v: a7 x+ r# t[atrpms]$ q: j+ v9 b# n0 ^
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms% s0 k) j5 Y' U3 w8 s8 B( V8 N2 _
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
) v+ K4 f, s7 X' z9 Y/ e+ igpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms8 _4 |5 ]5 i5 A3 ~$ m% f
gpgcheck=1
# I, G9 y6 w6 M$ p. z9 ienabled=1
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! L8 R, I' C7 X3 P" ~2. 閮剖fail2ban; R, K; T9 P( N
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
3 p1 }- `  l6 x4 Q3 Cvi /etc/fail2ban/fail2ban.conf
; |4 U* n9 d/ Q- p( u: ~3 \; b1 l靽格 logtarget :
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  1. #閮剔6 a0 ?' |0 w5 _, h9 ~+ C# i/ m( O1 }- a
  2. #logtarget = SYSLOG
    , H# d" m" J; M& }
  3. #隤踵游+ K7 a* U! S6 P5 I2 j$ V) Q
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)2 d5 s% j/ Z/ a9 Z3 K6 |- Z# t  O1 O, L
  1. #閮剔
    * l* B% C# r- R4 E
  2. #backend = auto
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  3. #隤踵游
    3 l) n( ~5 }" ]5 n3 I( W. j; u, x
  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]
    - [# v( I* x( G+ s: R+ V/ I# t
  2. #臬血( L  @8 G" S" x/ [
  3. enabled  = true+ m: l1 q* Q# R1 r# \: }8 W- y
  4. #瞈曉蝔梧雿輻券閮剔喳1 d  N; ^: F7 a, a
  5. filter   = sshd
    ( h+ w( M; F# o$ F7 k
  6. #iptables閮剖2 r& M% I  m- y& ~
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]! [5 v( V* q3 c1 B+ [) M+ Y) j% C, y( k
  8.            #潛餅撖靽∟身摰+ }. W6 |, g- X; d0 U- W( E. D
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]1 R  [* d- m6 U& u% ~

  10. , \  m3 g! ~0 @  S' v0 S
  11. #閬閮瑼0 ?* s$ ?# J" `( L9 r) L
  12. logpath  = /var/log/secure, R3 t+ [) h; X! C# F/ n! K
  13. #擃閰阡航炊甈⊥' b1 X" ^! P0 ^1 c( P
  14. maxretry = 2
    5 C: j- R  X$ S4 \- E' u7 D
  15. #餅嚗-1銵函內瘞訾餅+ Z+ b) H8 K/ |' e7 I4 S, y
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬( @3 U6 d, _, ~4 N7 k+ [8 {
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
9 j6 i# c4 }, l4 w1 j/ f2 L憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
: q9 ?2 k; Q  Y0 e2 x7 R vi /etc/init.d/fail2ban* L5 M- s( I% B( P7 P4 f9 D
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
    4 [$ ]6 m4 K  ~$ q: O) i
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "+ X  w" M" Q- Y0 m2 w$ a
  3.     getpid5 m  r! ]+ O4 |. I9 F! R% u
  4.     if [ -z "$pid" ]; then
    + N) @4 A) J* G' Z3 `$ X8 `+ R
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    " V) H0 |$ A7 E7 M0 k+ n- F7 `/ Z
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?6 E* d  F- [# ]* G
  8.     fi- p) z* k; I5 V- l7 a* t
  9.     if [ $RETVAL -eq 0 ]; then
    % q# I1 y; B5 R4 ~+ w9 n
  10.         touch /var/lock/subsys/fail2ban
    ; e3 K# O3 ~- a0 p0 G- z
  11.         echo_success
      m6 R8 M- d" L1 H
  12.         /sbin/service iptables restart # reloads previously banned ip's
    # M% d: q( p) q% X0 I5 W7 [) j
  13.     else
    5 c' A5 f  H. J7 ]9 g/ ]
  14.         echo_failure9 f" f+ p; \6 O3 Q4 P% D& k
  15.     fi
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  16. , p) q0 n5 a6 R% {# o3 B- c% C
  17.     echo
    + D1 c' m' z) c) \0 c
  18.     return $RETVAL& b* E0 ^. Q! S" r3 M/ @
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
    + }3 s2 o! U' R: t1 c: @* }
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid
      C4 Z1 T% D7 p( X* T5 e' J
  4.     RETVAL=$?
    & c0 i+ c8 u' ^; }1 c: o( J/ J9 T, C
  5.     if [ -n "$pid" ]; then. |& `) t# f- r" `8 q
  6.        /sbin/service iptables save # saves banned ip's
    - e% S* X) b8 P' A! B
  7.         $FAIL2BAN stop > /dev/null9 x8 v$ ]  n/ l  `' r
  8.     sleep 19 a, S1 J, X# [
  9.     getpid
    4 k) \2 f5 ~( }  I
  10.     if [ -z "$pid" ]; then
    5 p$ Q. e# R" R6 W
  11.         rm -f /var/lock/subsys/fail2ban0 i2 D. ~8 h2 W
  12.         echo_success
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  13.     else
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  14.         echo_failure$ d; f5 W% P# S
  15.     fi2 n: ~- P. m3 b9 c: S; y
  16.     else
    0 B1 D4 b2 N  X' C* Q% l$ n  Z$ Y1 K
  17.         echo_failure
    ! G; t9 U$ I. }
  18.     fi
    6 o0 q7 A* ?% [2 t9 `9 a4 s
  19.     echo3 X& c3 q. x( B0 m8 ?7 Z. F5 t
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨7 D; @8 m+ S" h6 R1 A5 @

1 x# p) Q% @+ t9 ?# j2 e$ schkconfig --add fail2ban6 O& _# A6 U( G+ v$ U: Z5 C/ r
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隞乩 :
' K' T3 g% B, k% `http://blog.pulipuli.info/2011/07/centosfail2ban.html  & c0 k6 ?* v; c* F4 N+ U% f( J
http://www.vixual.net/blog/archives/252* S% C6 b9 d4 k7 ]3 V& f

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