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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  L0 O0 R2 l6 T7 ?! y

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- P+ |7 I1 ]' N# ?CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗& [9 u; U) `% H. }7 |
1.肘um摰鋆fail2ban5 Q4 ~+ M" l% \  i7 [5 W  a
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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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atrpms
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2 m0 Z. \( _1 |9 T3 R+ V& v隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗) ~6 Q3 f5 v' M* |  I

% G4 Y5 M4 ]! e$ g& W. Uvi /etc/yum.repos.d/CentOS-Base.repo8 O' j- f) N4 o" c
冽敺乩誑銝閮剖嚗
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; S7 o2 s4 S# Q' m6 U# \[atrpms]
$ [8 f# J4 S: d/ G% l4 P+ Cname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms% X0 s* J) ?7 ~8 }
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable0 Y' w: [; ~: q. u8 q9 [5 M7 V4 P
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
% _6 ]1 x4 g. D" C' `gpgcheck=1/ }" g. A. N& ]  |
enabled=11 |0 j  }0 M, U  g! P
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2. 閮剖fail2ban$ v1 p8 O' K, h7 z
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
! V  s( Q7 I; s. L  a" ~vi /etc/fail2ban/fail2ban.conf) W3 J7 D  @; L4 e6 J6 s0 v2 V
靽格 logtarget :) |' H, H8 P, q2 q
  1. #閮剔
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  2. #logtarget = SYSLOG
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  3. #隤踵游* G& W. n& P5 D1 u
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔" Y3 ~( L. j8 L! p+ l7 S6 t
  2. #backend = auto
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  3. #隤踵游3 s6 o5 ~; m5 N' O' 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5 w! D3 {6 W1 J: b# \2 _; z
  1. [ssh-iptables]. X0 t4 w. c: B5 M% a0 |
  2. #臬血
    1 S: e' b' L; E# g) X. l
  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) C2 L, D0 c8 E, o' C; i- X+ n
  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰+ E. x0 O' M8 X7 B4 I
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]* ]2 `0 Y; H2 }5 ]

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  11. #閬閮瑼
    2 p/ _: C0 r) m: J1 b+ r
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥) X0 `% j# ^3 Q/ G; ?+ M  G% c. E9 N4 ?
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅3 ~" i+ u# ?; E5 G
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
. t: S0 H4 X3 U( o$ A3 N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) ^0 `6 [) o' f  N- ?7 O
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆3 x. n: v( q4 O8 [# \1 {* A, N+ C" P
vi /etc/init.d/fail2ban% S) p2 x  V& R1 n
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗- Q7 ~7 M* {7 q) ]
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "" G/ ~3 V) T/ B  o' R; k9 d1 |: e
  3.     getpid5 I! U# m+ Y$ [! r! J
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    2 v4 E5 E! ]; [6 |: b3 k  ~
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
    ' `2 l! b# z7 B2 z% l
  10.         touch /var/lock/subsys/fail2ban' [8 L& T! u4 b, \$ [
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's
    % w" A5 f0 ^6 W
  13.     else* R+ d* a4 y+ @6 w& a1 d" j
  14.         echo_failure
    % W# K5 t% h7 h6 k' i1 l. T4 A
  15.     fi) t5 ?5 I$ X+ k6 w# V# V

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  17.     echo) w% \' v7 Q+ [8 I
  18.     return $RETVAL, a/ M1 v  l# n* y
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {) s. X: ?/ O$ O( Q( [% i- j
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid
    # j6 }1 c4 r! d8 {+ C, Y8 a, O
  4.     RETVAL=$?) s  j5 I  E9 W1 O
  5.     if [ -n "$pid" ]; then1 A3 s" e3 Q( ]$ }% _
  6.        /sbin/service iptables save # saves banned ip's% H, k2 P8 C! i) m
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1+ Z& |" c& J% F5 x; j
  9.     getpid
    % K& ^3 o/ P" [5 \5 ^1 B% e1 g
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success! H1 d6 _, G8 `. a- }& @9 J
  13.     else+ i6 B4 A% F* z! q: Z; P
  14.         echo_failure
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  15.     fi
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  16.     else* [0 p' F/ t8 C# X) }! D" I. d
  17.         echo_failure
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  18.     fi
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  19.     echo
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  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
: `$ ]+ Q, h+ r" K* g# O4 ^# S" O  _
chkconfig --add fail2ban
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隞乩 :
; _3 y0 F2 X( M$ g8 G) U, p4 Ohttp://blog.pulipuli.info/2011/07/centosfail2ban.html  " Y6 x1 {: m2 y5 ^( u" _, D; H
http://www.vixual.net/blog/archives/252
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