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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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CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
/ N  B0 G0 a4 T! A+ s3 Q# q1.肘um摰鋆fail2ban2 w4 m+ A1 {2 g: P: R7 R
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; A2 \; N3 L9 X2 S! {; T9 I9 I

' E6 M* T, N$ l, }; x0 w2 oyum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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- o3 ?- l2 S5 ?. G) O7 k隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗! S8 a/ }  d: r0 E* ]8 \
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vi /etc/yum.repos.d/CentOS-Base.repo
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" \' a, K" u3 k  v& n4 K. P[atrpms]
# s8 {# D1 `8 K2 G# u; Y! nname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
# }. `+ }8 w/ ?2 J4 \0 B* x( r  ?baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
# Y0 i. s$ w- G; _& agpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms& A* [# f; G$ [
gpgcheck=10 k1 T) s2 |  T6 }4 \! x
enabled=11 `* @5 @( a" Z: k/ H5 V6 @
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2. 閮剖fail2ban
8 _; O0 K6 k. |! @4 m銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
( x6 t: N7 d- e8 U, z2 ^vi /etc/fail2ban/fail2ban.conf0 B. T# R! W7 W6 R7 S6 H# n
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
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  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)! B/ y9 y- g$ U' ?. g
  1. #閮剔9 H. D. P" s- i7 V8 N# `+ Z
  2. #backend = auto 4 k( S7 z5 B. a& w
  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3 R) a1 _& Q3 W* \0 |5 _
  1. [ssh-iptables]3 |/ ?& f& j& S, i9 C9 Y$ o
  2. #臬血
    3 _  s* t8 E4 T! }5 n
  3. enabled  = true
    ! R6 M8 I1 w. C3 r% |  ^
  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd/ ^; ]6 ]6 B9 }# F4 x
  6. #iptables閮剖: ?  ?9 L5 c! P" o8 w" \3 t
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
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  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. 1 K' Z) ^8 d: f! o
  11. #閬閮瑼
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  12. logpath  = /var/log/secure" l! r: I" d0 R
  13. #擃閰阡航炊甈⊥( s2 s- w/ f' w: X! g
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
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  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬! o- J" u( o0 P5 w
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
) u& Y& {5 [2 p" q5 K5 C. t, H憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
$ P/ Q) }" @6 `9 t3 t  Q% p vi /etc/init.d/fail2ban# w9 ~7 A/ w9 u% @' l" Y
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {* b) A( L8 ^0 u' i" }2 p
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid
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  4.     if [ -z "$pid" ]; then. g9 e/ `# K# a( U) s
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null( M& ^. A; ]* V$ [) n3 t6 o2 ^3 t" w' Y
  7.         RETVAL=$?& ]8 A' s" |# ?+ J: u* q
  8.     fi  S' E5 l! q- n+ V/ K7 y# `
  9.     if [ $RETVAL -eq 0 ]; then
    , I4 I: u; _- P, h& \& c
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success0 k7 D9 N" f/ G+ Z& I( A
  12.         /sbin/service iptables restart # reloads previously banned ip's9 [) n! D; p# h0 T0 L( l* H
  13.     else/ S$ k5 R! c9 _4 a$ _6 M
  14.         echo_failure4 X; W7 s: K: E' d2 `0 W6 a
  15.     fi
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  16. 9 c! b" G2 L) s; U* e: {( P- N
  17.     echo+ _0 N  t7 N8 }
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid
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  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then( S" g6 Y. s( T* n6 O% u
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 11 T9 l: s) V1 c+ Q: M
  9.     getpid% A0 V% i* U& \- E4 Y' j6 |
  10.     if [ -z "$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$ ~( P) V; l0 b' V/ }% D" B
  14.         echo_failure1 V% T- n/ u; h/ V6 F
  15.     fi0 c7 B9 e  x( D7 f/ o0 w( D
  16.     else: x5 Q" q$ v3 q+ J) f
  17.         echo_failure* z9 s+ p5 L- f! X! `* H5 M! S
  18.     fi
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  19.     echo, m4 e# d" V' i" Q% u
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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$ [9 P2 ~( n4 @) S) s) `5 \# J* qchkconfig --add fail2ban
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隞乩 :$ r; a- }1 i7 W0 I$ M# r4 ?
http://blog.pulipuli.info/2011/07/centosfail2ban.html  ( f( B9 |! q& e2 h$ h6 W
http://www.vixual.net/blog/archives/252
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