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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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啣:
) M2 A. m7 q; `, k8 m, X0 F1 oCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗3 ~  t% P" U: j+ U; s" {: j* U6 j! M
1.肘um摰鋆fail2ban
5 \1 |- E$ h6 y% _) a; 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)
$ V5 @( F9 T5 ]0 w
8 }. ^' X1 _: w) D' N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! a( Z% o7 G1 @; S

: W3 `/ E7 N4 E/ Syum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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& ~/ S8 u) d& M" `7 Q隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗* n. w4 |3 J8 K% _. {1 M
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vi /etc/yum.repos.d/CentOS-Base.repo
2 Z7 g* d5 Y' K; f4 w$ l+ C" |冽敺乩誑銝閮剖嚗
7 \$ a; N3 v4 q; V4 w0 G- F# O9 r
[atrpms]! T6 e2 G  ?8 ^/ ~0 z. h  r4 l1 P4 h
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms* N) z& F$ y( h( E# M2 g
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
% O! }- `2 G! ^) bgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms& u1 |2 y6 U( `# j6 d1 h
gpgcheck=12 `! R3 A" T3 \; q; d
enabled=14 n3 c" k3 I- @" q: x0 t( R# \

9 e. W+ V& m6 a: _2. 閮剖fail2ban0 Q9 x- Y% X  \" `. S
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
/ o% G( Z* Z) m5 [% {4 P  H; mvi /etc/fail2ban/fail2ban.conf; F' U& c" a$ U$ Y: n
靽格 logtarget :
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  1. #閮剔
    $ y* b5 B7 a" p& l9 L7 \' v
  2. #logtarget = SYSLOG; }- S, L7 v1 M5 Y" ]% x! B  S! H
  3. #隤踵游
    9 w6 ^" Y) N5 O, B7 @
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)2 d( Q# T4 O. W: y( |3 P# D
  1. #閮剔/ [; `. p( h) F
  2. #backend = auto + O2 w* \/ ^7 e7 d
  3. #隤踵游# `5 M+ `: v1 v* I4 Q0 S! 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: Y+ g5 Y  y+ P  z
  1. [ssh-iptables]
    & h9 W  {7 i) S; q! V; N
  2. #臬血
    / Y- i, C7 |0 I4 r' j! p
  3. enabled  = true
      e; [" j9 I) s; u# ]- q
  4. #瞈曉蝔梧雿輻券閮剔喳4 s5 O/ |) x) I; n2 [% \
  5. filter   = sshd
    ! F& J* v4 @7 s  K5 n
  6. #iptables閮剖
    % [( F' ^" L4 P2 D) @
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]' w7 u; h4 s1 P
  8.            #潛餅撖靽∟身摰5 ]* ?8 M8 w  C/ f  u8 |
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. # m2 ^/ y( k0 Q( |
  11. #閬閮瑼
    + \" J: M4 v* }- @1 k
  12. logpath  = /var/log/secure0 h9 [- D+ V3 c$ C/ W) |
  13. #擃閰阡航炊甈⊥
    9 n4 K/ E- B6 a0 U+ R; E
  14. maxretry = 26 t1 O2 O1 \9 M$ z5 _, U+ ^
  15. #餅嚗-1銵函內瘞訾餅
    ' ?/ I& F- h2 y- a$ {3 B
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬, l! \  S6 H! e+ B" 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/ E# B# _3 C* l5 `! `' C
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
8 U+ O9 Y* m' F; C9 D( | vi /etc/init.d/fail2ban" W* `, S2 t3 }/ }, p9 }
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
    ( L$ W9 |# h0 C
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "5 Y8 f8 a+ V) E! r% J' ~+ e
  3.     getpid
      E& X+ I$ y- F; ~4 |0 n( s
  4.     if [ -z "$pid" ]; then
    1 V& _0 c$ u9 j
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban" f5 l& H2 }8 G8 P( J* i& Q
  6.         $FAIL2BAN -x start > /dev/null
    ; f0 N* T2 L# i% |
  7.         RETVAL=$?
    % ~. g! A" p( B( ~  D' U, m
  8.     fi+ y4 T) ]8 s4 h: C3 M
  9.     if [ $RETVAL -eq 0 ]; then
    3 l# l! g5 J: o. W& @+ P
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success& A- P# _% ~1 b- y! I# [1 x1 \5 n
  12.         /sbin/service iptables restart # reloads previously banned ip's: `  w5 X5 L7 L# o- |% d* F
  13.     else
    " `8 B9 s, h. i( R, P
  14.         echo_failure
    9 X, a' v( Y0 _' g4 k! j$ {9 H
  15.     fi0 }" O3 w) V' g  q/ e

  16. 5 m) q3 X: j6 M5 f' f
  17.     echo- Q# K* ]8 U6 g1 n% I$ H
  18.     return $RETVAL
    & z" d, w% ]3 D
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
    0 q2 s; w2 y2 m3 G: C% d
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: ", E- W* ?: ?1 R# q& T; A2 F' r
  3.     getpid- Z) j- @, J" ?# Y
  4.     RETVAL=$?: ?; {" |3 C1 n7 f, q$ r$ i# \
  5.     if [ -n "$pid" ]; then9 ], ^! }, q3 w5 ~( m
  6.        /sbin/service iptables save # saves banned ip's
    5 E5 P' S( u; b# E$ r
  7.         $FAIL2BAN stop > /dev/null/ L( \0 p+ ^3 g" k9 p8 _
  8.     sleep 17 ?$ o  J& U1 ~4 w( y
  9.     getpid! ^+ m1 m1 A$ Q$ W8 d
  10.     if [ -z "$pid" ]; then- ]) k8 B$ Z+ `8 R# e
  11.         rm -f /var/lock/subsys/fail2ban: s, I0 D' L2 a
  12.         echo_success
    9 s. g) _/ O/ s; S  y2 d, n
  13.     else
    ! L" @. z; p/ c( @8 P
  14.         echo_failure' f/ l0 k. E' I3 M6 M
  15.     fi2 B0 c: J: b0 _
  16.     else
    ; a) S8 b+ T5 y  o% Z! k' @
  17.         echo_failure
    " x" r; @4 g4 F+ N' G/ ~
  18.     fi
    & t1 M. C  i3 k7 d
  19.     echo
    9 L2 E( c- g7 v+ J
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨" [9 k+ u8 D' d6 D
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chkconfig --add fail2ban* D7 o; U( u4 E) N
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" f- t9 E( \* f9 i隞乩 :6 B: \5 u# y; N! q3 k* T
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
4 D+ h3 U/ p  r' i5 ohttp://www.vixual.net/blog/archives/2525 ^7 ^+ ^( S9 o* {

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