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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 ! b1 U4 A, ^4 c9 o
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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$ I' `5 W# C# b% ]3 z
1.肘um摰鋆fail2ban) z& g0 U) ?- t0 [
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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- V: @+ C+ ^0 ], r" @, o8 p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; ]+ U) ]$ j- [, }7 x7 n" c" 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' K& Y! l* C8 m$ ^  ~

: J% c1 G3 w! v# P- `隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗7 B9 Q; @( g' {" x! |

. g& n& [2 z' ~8 c  K  [vi /etc/yum.repos.d/CentOS-Base.repo4 i+ U" {. z/ K0 B, E# B, u
冽敺乩誑銝閮剖嚗
+ V' h4 {9 {7 \2 V$ g$ s
* t) J' _4 @( I2 _: ?5 Y[atrpms]0 f. ~9 W% z7 V
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
6 p5 B8 N0 Z! F; K1 _4 tbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
. d4 f& J5 A5 ~7 ~$ l' S5 Kgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms2 e3 F' q' }2 r* J) W
gpgcheck=1/ J) T7 K' L8 E  d- c3 X1 ?
enabled=15 k; K' P1 S$ K- T0 M7 c+ v

* I$ ~6 n' E# J1 l2. 閮剖fail2ban) e& a3 t  g  d/ `3 c9 Q
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
4 Q7 N. V  C; k$ Pvi /etc/fail2ban/fail2ban.conf
0 ?$ m) I4 I/ C0 L靽格 logtarget :1 m. @- L" I  {2 N1 j: M
  1. #閮剔. x) w5 E5 V. B$ l4 z) G$ V' r5 w/ u: S0 l
  2. #logtarget = SYSLOG' E- O- W, m' n$ `
  3. #隤踵游4 Y& s* [' ]5 w* i: x) }( u2 A
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼); s  ]) D7 c" D, {! l
  1. #閮剔. x7 _/ n% h# e4 `' S. [
  2. #backend = auto * g4 k" e2 Y7 ]- W% L  ~
  3. #隤踵游
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  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( Q- t& l3 v  l+ W/ h& r/ ~
  1. [ssh-iptables]) e+ i/ q# J; _4 l# [
  2. #臬血3 T/ S6 G% r8 D' u" H% l
  3. enabled  = true% R  @/ S, H4 G! Y! c) m
  4. #瞈曉蝔梧雿輻券閮剔喳, x- l4 r% o6 M0 d& K
  5. filter   = sshd
    % {6 S! O1 W; `0 T
  6. #iptables閮剖0 }) X4 f! Y& e/ `
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]3 `6 w4 q7 [: l9 \$ @" n
  8.            #潛餅撖靽∟身摰( n2 ?& q& f9 o) u
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. . G( Z3 Z' D9 Q- O2 `$ `
  11. #閬閮瑼
    + Z" @/ F2 y5 A
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
    5 G8 }  N! e3 q3 T
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬, s! M. a- f7 [* `' \
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& x- v. f) g& O9 V+ X# p0 T
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆- s! G2 v1 N2 z  u( D  A
vi /etc/init.d/fail2ban$ d9 J4 n1 l! K$ |" C( q, h
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗) R) \, A# A% A& K  W
  1. start() {- I# N# `% l1 o% G
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "+ Z3 `$ w& F+ `3 W+ A( s* Y
  3.     getpid
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  4.     if [ -z "$pid" ]; then& O( G: {% x$ h3 f
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    ( W# U3 {9 U( k: H
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi5 x- i5 _; j  U
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's- H( j: j! Z# a1 o% n3 \
  13.     else! g% x' c( E1 L+ H
  14.         echo_failure$ x; f0 T! |- I2 u+ S: ~9 p
  15.     fi& K9 c/ g5 s5 a0 S
  16. 0 V7 q' X7 s0 y( e& j/ \! @8 E3 f
  17.     echo
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  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {1 q' B; a0 Q1 r# |, e( e( p
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "( N, k1 h- D' ]  r& U6 b5 f
  3.     getpid
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  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then  q& d8 p+ {2 f9 `* u
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null4 h* s+ L8 `8 r; c/ ~  b7 f
  8.     sleep 1
    4 d, i0 u: w; ^
  9.     getpid
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  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else
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  14.         echo_failure# V* F8 m- p/ [& c6 d$ v
  15.     fi
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  16.     else
    # G" h, N6 _% Y
  17.         echo_failure0 i4 M7 ~: L2 h
  18.     fi, K; \$ s& ?: w% j1 ]
  19.     echo" w' B% w4 W; N! T
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
$ J1 N7 w9 q! q8 b/ }
% G# f. ]4 a% M9 N! [0 @chkconfig --add fail2ban
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隞乩 :) Z. H) Q2 l2 f5 t) T) E, _
http://blog.pulipuli.info/2011/07/centosfail2ban.html  1 s0 @4 [% y8 k! N
http://www.vixual.net/blog/archives/252
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砍憛批捆靘餉衣雯頝臬批捆蝝颲行粹嗥蝬脩嚗摰撟湔遛嚗嚗甇脖誑銝嗅啣摰嗆摰撟湧翩鈭箏ㄚ孵舫脣伐銝憿亙祉璇甈橘芣遛18甇 雓蝯脣亦閬賬粹脩芣遛18甇脖芣撟渡雯閬賜雯頝臭嗥批捆鞈閮嚗撱箄降典舫脰蝬脰楝批捆蝝蝯蝜ICRA蝝摰鋆閮剖 (粹蝯行霅 祉蝬脣銝蝝瘛函隢憯啣嚗祉閮剜蝞∠)

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