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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 ! E  Y/ b& ?; ?% m* k( |4 u
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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. R) a3 L  Y( r
1.肘um摰鋆fail2ban
) y. W# Y2 g. Jyum -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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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
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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atrpms9 |5 ]# ^) g& U& H: h
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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& J4 I2 K8 X6 W5 G8 Fvi /etc/yum.repos.d/CentOS-Base.repo) g3 y! z" k1 }( T6 E( y
冽敺乩誑銝閮剖嚗
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% `) H/ l$ n* K4 i/ u[atrpms]# ?6 I1 ?9 r7 _/ `! I: W
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
1 X0 j' h! r. dbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
+ T+ b* b- [9 ygpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms# R1 _) n: f1 h* O" W
gpgcheck=1: d( s, T; t  k) ^0 Q' i
enabled=16 w& X! F1 |  ?# U" k  f8 r
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2. 閮剖fail2ban" }: }; j( |3 r
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf; R" n  ]  y, p8 C1 c( M2 O; U( n
vi /etc/fail2ban/fail2ban.conf3 w5 A: d, U- w5 c
靽格 logtarget :
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  1. #閮剔
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  2. #logtarget = SYSLOG
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  3. #隤踵游, G3 R8 j2 Y9 l9 x5 q
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)" Z& a1 r7 c+ i5 k
  1. #閮剔, Q6 Y6 J0 x6 g: k
  2. #backend = auto
    ; q1 k( @1 t* P2 e' W+ w# u, U0 \, B
  3. #隤踵游! b% i% C# d. s8 p! t2 c/ M
  4. backend = gamin
銴鋆賭誨蝣
gamin烊inux憟隞嗡銝憒蝻箏雿臭誑肘um靘摰鋆摰9 K8 t8 w8 x' w7 A- w! ^3 q4 R
  1. [ssh-iptables]
    6 a9 V- r8 ?- w& h' i3 S
  2. #臬血( T, K2 H- Q: c# h1 i% i2 o
  3. enabled  = true9 S- [8 E3 R2 x! F. [
  4. #瞈曉蝔梧雿輻券閮剔喳
    1 w7 p3 v1 v" L& [
  5. filter   = sshd
    4 C; z* U4 R* h  _4 x! T. {
  6. #iptables閮剖
    2 X0 ~' n; S' [, A8 T
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]9 m1 h0 L/ H5 T( Z7 [3 `( s
  8.            #潛餅撖靽∟身摰
    1 K0 F7 F0 `6 x& V
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
      F5 ^! [$ @3 j

  10. / b4 F  ]7 Z# h* _' h3 U
  11. #閬閮瑼
    " ]# L# w& C9 s: ?
  12. logpath  = /var/log/secure* J: y/ G+ k0 k8 @
  13. #擃閰阡航炊甈⊥4 x8 q2 z7 Z1 B% I& v+ H7 s1 @
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
    ; ^7 L- \& I* s0 r
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬" e, u' m7 E& Y
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erver5 b: {8 j( F# T4 A) w
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
" M& p0 ]0 g4 s vi /etc/init.d/fail2ban6 A5 s3 ^+ H, H" S& g7 g2 q
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: "9 Q6 V$ }% N+ E
  3.     getpid* `7 x/ z& y* v% c- n- h
  4.     if [ -z "$pid" ]; then) C2 `1 H3 ?' s" U. K
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban! c! J! _) S  z$ V; N
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
    ; ]$ U5 i9 g# {3 @& \; e5 w
  10.         touch /var/lock/subsys/fail2ban1 [6 P" j1 Q1 w$ a# W. |1 J
  11.         echo_success
    % W7 ~- E' r; Q& @2 g& n
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else* C% Z+ a) \. {" a. u
  14.         echo_failure
    ' P9 u1 {) l6 x
  15.     fi
    9 ~+ v; {0 l; t# n) q
  16. 3 \- |# h: S9 V. g+ E
  17.     echo$ z# D7 c  S  y: [5 U
  18.     return $RETVAL5 k5 Z" }* i; @( n% T
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗6 L# e, J* l$ _1 c6 l! u
  1. stop() {6 a% W; x7 x$ F& a1 T/ G9 _
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid
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  4.     RETVAL=$?# D5 z+ T$ c3 d+ s
  5.     if [ -n "$pid" ]; then  g3 u& N. o, w
  6.        /sbin/service iptables save # saves banned ip's
    ! [0 t5 E: Y" e) U
  7.         $FAIL2BAN stop > /dev/null
    2 b  y: ^8 [2 [* N. t
  8.     sleep 1
    , U) a$ Q, p( a/ i
  9.     getpid
    1 @0 ^7 X( U2 Z1 T" j: F$ _
  10.     if [ -z "$pid" ]; then
    ; @( k% I& ^( f8 q0 A$ ~
  11.         rm -f /var/lock/subsys/fail2ban
    3 V9 v4 n; {/ t2 N9 b+ C
  12.         echo_success
    2 z! f) a4 N7 D# F, Y7 i
  13.     else
    6 s" p! l" T/ P4 {: p
  14.         echo_failure
    # m$ E1 E. P6 A4 y6 r2 ~" H
  15.     fi
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  16.     else
    0 M9 D  v0 X* K5 h5 |' y5 k+ T
  17.         echo_failure: K8 ~/ E2 d: O1 H5 j
  18.     fi- `$ w9 d. p; y- R+ H0 Z0 L
  19.     echo/ T0 }6 K/ y& P8 ]/ Q- B9 x+ A
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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, R1 I7 C( ?0 u$ vchkconfig --add fail2ban
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隞乩 :0 |, a# V3 @% c# N$ s& w" b
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
9 F4 a# m1 w; O: e; `5 Chttp://www.vixual.net/blog/archives/252( m# v4 ?, v  L  f/ H

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