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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
$ e! V" u( W( G4 K+ t; j4 b1.肘um摰鋆fail2ban0 b8 u& ~- N5 F
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)! l' R% X3 ~- U- O
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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0 N) D7 d. E* W+ M! ~

" q0 V! O  a- L  D' hyum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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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
$ P3 h7 i& H  ?: t" Z6 k' n; H8 q$ K& \8 m/ s6 \  |4 q5 h
vi /etc/yum.repos.d/CentOS-Base.repo
8 F: [2 J1 @# K/ t冽敺乩誑銝閮剖嚗
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[atrpms]
8 t5 N& Q9 S6 |* D# T# y, x" ^name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
5 L9 s/ {4 M% J  U7 `+ dbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
4 t" Y* t/ N% O9 @/ I; f+ g6 P: bgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
3 C% I8 F4 X# [gpgcheck=1
  z  f$ u; ]7 ~3 S. R, R0 I- I( o2 p+ ?enabled=1
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( W! z( K' F, R6 g) N+ r2. 閮剖fail2ban) w& t0 `" _$ o3 I: x
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
1 z% k3 h' l, Vvi /etc/fail2ban/fail2ban.conf
! W$ o% ^: |- j) |8 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
    # ?' b9 J9 z9 w, S
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)# ^4 L# z4 {7 S- E% Q6 L. I- }
  1. #閮剔
    - A4 y: W  ]2 Y* d. }
  2. #backend = auto ( m- ^  w4 L- n/ `: p. Q- m: H3 F% M
  3. #隤踵游7 ^7 \9 @6 [  ~( h( ~% ]# w$ l
  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 z3 r' Y- t. J, \
  1. [ssh-iptables]9 Z4 O  l* R' E. e
  2. #臬血
    , U" V0 [9 v+ H) t3 o  \- Q* ?8 P
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
      d- i  i! D" k9 p7 C! L" r
  5. filter   = sshd
    2 U$ G/ P" |8 n* ~
  6. #iptables閮剖+ H. a5 n0 N: o% X0 I  n2 d
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    . |+ R" u- w1 P; W9 G; O( ~
  8.            #潛餅撖靽∟身摰
    2 N2 e+ o2 B  @
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]" u0 Z# H8 H9 i( U, ~- P- k

  10. 3 `/ {: y8 T* p1 q; b$ V
  11. #閬閮瑼: N6 [. G: C- @$ q  z) R
  12. logpath  = /var/log/secure
    & U3 k4 Y) z5 O) E! }
  13. #擃閰阡航炊甈⊥
    7 m/ p: h) D- X% |, F6 T9 s3 G% b
  14. maxretry = 2. C3 d. R+ X' T8 h% F! O) I3 d
  15. #餅嚗-1銵函內瘞訾餅* [' N  R  E1 M, C6 S& K
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
1 h7 w" T( T, h7 ~% C' K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erver2 d/ P7 Q( ?  N) `
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
( ~: D3 E1 D  d vi /etc/init.d/fail2ban/ ]! l/ h' d/ Y, q7 _3 D
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
$ v# O  t% y# e+ P! u# a1 V+ J
  1. start() {* Q9 ~2 h0 R. R3 u! A1 F/ p
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "- I- J9 e6 {, W1 r; }
  3.     getpid
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  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null7 ^5 J. W  `0 g7 c3 K9 f
  7.         RETVAL=$?2 L0 m$ g! ]) [
  8.     fi' V* b1 Z2 d5 n1 z  i: z3 Y2 q
  9.     if [ $RETVAL -eq 0 ]; then
    ) ?# k9 b% }) I7 x% d6 _  u
  10.         touch /var/lock/subsys/fail2ban8 I" K3 }8 W+ _' @  v
  11.         echo_success
    % v6 V0 S7 R& w7 b  O
  12.         /sbin/service iptables restart # reloads previously banned ip's# {5 I. d* \! J! M, N  g- R
  13.     else
    2 O. y5 k  ^& Q; G& h
  14.         echo_failure/ c8 |2 _7 E% }- N! }
  15.     fi
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  16. 7 S  P) Z  g. ]  ~2 d2 \
  17.     echo
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  18.     return $RETVAL7 T5 m. w6 m! g% E) p7 o! O( a
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗5 O- x2 `. B+ Q4 v, U
  1. stop() {7 x% @2 T  S* M' S
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "" R# T8 a+ ~6 B  r1 m
  3.     getpid! U0 n- e5 Q/ C% E" f" H; i+ S* \
  4.     RETVAL=$?- |; O( c) p5 |& j4 K4 j2 m; ]
  5.     if [ -n "$pid" ]; then2 m* U$ b7 k# n8 z$ a# ]
  6.        /sbin/service iptables save # saves banned ip's' ?  t8 D7 r/ O; W) a3 N9 [9 ]) z
  7.         $FAIL2BAN stop > /dev/null6 y+ q9 ?# U. p/ I, ~9 Z
  8.     sleep 1
    * m, y' ]6 e) v
  9.     getpid
    4 m# d0 B6 W  Z' G+ U) v7 Z
  10.     if [ -z "$pid" ]; then- b: C; v" Q0 x2 j
  11.         rm -f /var/lock/subsys/fail2ban0 K' ~8 |7 q3 b  L3 c# u4 ~
  12.         echo_success
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  13.     else9 o& K+ R" s2 T
  14.         echo_failure
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  15.     fi. @2 G) \$ c3 ^: t( Z& V
  16.     else
    5 B: u; c" K2 B% M8 ^
  17.         echo_failure
    - K4 o" |3 P0 ], Y, D# g3 q& v
  18.     fi5 Z! ^% }. U# ~* `, {' f
  19.     echo& E  R) n8 I' C* ]6 J, i$ @+ c
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
$ R0 Q! b! l9 O6 O# b. A7 _3 o/ Q" _8 D+ s
chkconfig --add fail2ban7 k. [+ V( a1 r2 R* Q$ z

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隞乩 :
0 v# h) w! p1 H4 b3 e- e+ qhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  ' P5 B, Q! v. T. f! X" s
http://www.vixual.net/blog/archives/252
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