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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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5 D9 J+ y& m6 p2 U: E# KCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗4 D& ?/ D' C5 {; Z
1.肘um摰鋆fail2ban" U* ^5 X1 e% t* t8 y7 _
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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4 ?- r* A' [; O' u. ]3 E1 H/ E4 |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2 X. G% S3 v# `' F: B8 g5 P
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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( [3 u( B4 W( V# i5 Y+ o. s7 _

6 i3 `8 f/ e3 A1 ]; Z隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗% D$ T9 a( h# @
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vi /etc/yum.repos.d/CentOS-Base.repo
8 V# K8 B* I9 }! ]% Y冽敺乩誑銝閮剖嚗
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# e" o& S: l0 E& v2 B4 S[atrpms]
4 X) H( ^! v9 M1 N8 `9 T! w! Q% w8 xname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms5 c  v. D; ^/ G' d* W6 g
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
) J2 A$ [7 @5 A! x) D% B6 ^gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
9 Z, g* g8 z' E' H; {% d4 Igpgcheck=1* w0 w$ B) r& _& y
enabled=1
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) O% J( A% V5 r' Z8 w6 y5 F2. 閮剖fail2ban% {( z1 p9 U2 j: N* W
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf/ e  s; Q: \% B. L4 m  {) @1 ^( a. p! j
vi /etc/fail2ban/fail2ban.conf
& Z* R4 z( g, s$ l靽格 logtarget :
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  1. #閮剔$ N' q6 G/ \6 D- O. h  W
  2. #logtarget = SYSLOG0 s; i. C# a; d* y$ A& V
  3. #隤踵游# F4 A: D; L; O
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)- `# ]* a- q) }) j5 X5 J2 \
  1. #閮剔
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  2. #backend = auto % j8 t7 g% I+ S$ `) R1 h
  3. #隤踵游* {  z  K. {( U9 E
  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. F: u) u9 A- }6 w4 x
  1. [ssh-iptables]9 y- t' ~) f& w% Q
  2. #臬血
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  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd
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  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]/ F$ Z# H* }( X% l, c' u! @* h
  8.            #潛餅撖靽∟身摰
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  9.            sendmail-whois[name=SSH, [email protected], [email protected]], O( K, ^& E2 [
  10. 2 f3 k, n) w0 v" v3 d1 y
  11. #閬閮瑼
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  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥+ P9 N2 ~- x- D6 V. R+ `
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅% G* S( I& D4 w3 p2 `/ x2 `$ M
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬0 ~  {: i( e, l6 W- `. j5 p
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
& ?, A2 o6 |. ~: ]2 Y憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆) `7 d, _' C; W7 ?2 L# M( G6 u
vi /etc/init.d/fail2ban/ [5 }( B+ B; }( Q) 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: "
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  3.     getpid
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  4.     if [ -z "$pid" ]; then. v! n8 T# G5 o; `3 D! i9 R: b
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban: _8 n1 O' F& l1 \; v) |
  6.         $FAIL2BAN -x start > /dev/null! ~/ t/ V$ a- C6 d: Q. T
  7.         RETVAL=$?
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  9.     if [ $RETVAL -eq 0 ]; then8 D# n! Z' j9 F1 B: c
  10.         touch /var/lock/subsys/fail2ban3 x+ ^# I7 Q, J: {
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's% v; `5 T$ s. v8 Q1 l5 V
  13.     else
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  14.         echo_failure% [+ o9 H! B5 [7 f0 _
  15.     fi
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  17.     echo
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  18.     return $RETVAL. i4 Q/ M. o6 x% r& E
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {. W; y/ U! m2 q# h8 X* _8 Z5 a
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid$ c; h4 T9 T0 n) u" a
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then% c( }2 ~2 z. V" p  T" N
  6.        /sbin/service iptables save # saves banned ip's: d( T0 g, ^, ?; w3 {* C
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
    / ?+ ?( Y8 k7 N$ `
  9.     getpid
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  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success& P* y% _: [( }7 u5 \3 ^) i
  13.     else
    ; |) J6 {) d! e8 I* m* X
  14.         echo_failure! g7 d: ]- ^( O" B6 t4 M- a
  15.     fi, r7 o9 }+ a6 Z! X5 D1 f
  16.     else
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  17.         echo_failure# r5 u7 A, U9 I6 f# v; \; x
  18.     fi$ p; \  ?8 S# l$ g! k, `! i
  19.     echo7 U: ?4 E0 `, Y2 H
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban- a4 I/ e* G2 J2 K

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5 t- Z. u' x( `3 H$ o. |隞乩 :! d  e% U- \, \8 N6 K
http://blog.pulipuli.info/2011/07/centosfail2ban.html  " n: [( _* v7 i" j$ ]4 W* j7 g; m
http://www.vixual.net/blog/archives/252
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