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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
+ r0 d; |) U  d! w1.肘um摰鋆fail2ban
$ x( @; V0 i' ^  P4 kyum -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)- o0 `/ K1 I6 g- n0 G) k% C
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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$ `9 j9 k$ V% U! d" M' T

9 U7 k0 C3 P; H! h: Dyum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atrpms7 i. \, L2 V. Q( j2 v+ C
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗/ V4 O: W0 j2 l! W5 ~  {9 o# J

4 o/ X0 ~. Q  Y! V/ ^4 }$ v# evi /etc/yum.repos.d/CentOS-Base.repo, m3 n1 a, C( ^/ p8 o
冽敺乩誑銝閮剖嚗
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! {9 q6 f' e7 K, {2 Y[atrpms]
% ^3 m8 x; W  C2 _* Oname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms6 l$ I$ @9 H/ b! E- }
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable: d  ~/ z$ `; ]
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
3 S7 u0 z! M$ Z0 a3 Egpgcheck=15 x& F7 U2 W4 f, u% h8 s, W
enabled=1
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2. 閮剖fail2ban( |3 S$ R; x5 n. g9 v% d
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf, J+ e8 K% z6 h" t
vi /etc/fail2ban/fail2ban.conf
5 N/ j  H& @$ u* g: n靽格 logtarget :; L& h" a9 h; A: _$ @, f$ x
  1. #閮剔* b; h/ r! @2 N2 O1 N
  2. #logtarget = SYSLOG
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  3. #隤踵游2 d) z% S8 \, s; [9 b) \
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)/ |. E: C3 r+ f2 e4 z
  1. #閮剔, i% t; \: C% g% h  S/ `% I# |8 X
  2. #backend = auto 4 B3 y8 I& N% K: _/ ]
  3. #隤踵游" q# b; n) G; q* X; H1 K. R9 b
  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2 X0 d, R  M( V( n; ^' K3 S
  1. [ssh-iptables]# T. E8 ~) J- @* `
  2. #臬血: b8 N6 S% Q2 P) Z  z
  3. enabled  = true; k0 P( C3 ~# U/ M
  4. #瞈曉蝔梧雿輻券閮剔喳
    - w9 n% R% }" t5 Q! C
  5. filter   = sshd
    % _) ^% ^  k. I% U0 ?& Y0 u! K
  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    # }( K1 H* o, D0 m
  8.            #潛餅撖靽∟身摰% Q+ e; B( C3 W: Y. h+ Z( L+ R
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]2 W0 ]8 T8 o" S8 D4 u' P/ ~) y

  10. 3 W( d8 ]' l+ f- l+ p( u; D
  11. #閬閮瑼$ o( ?. t6 J) W% J% x
  12. logpath  = /var/log/secure& A6 r3 k$ X, Z
  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
    + Y9 |9 F9 g  }
  15. #餅嚗-1銵函內瘞訾餅
    2 s6 j* N1 J' E) I& I
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
- _& E5 B% s1 m. V% U/ v! 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
: }- d% {  l3 ?9 B憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆% v. J* E* a; o6 c
vi /etc/init.d/fail2ban" N( J9 `1 J. g
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {: b# J: J% f2 ~# i# A# l
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "( {4 w* l: N! `1 @: H2 b
  3.     getpid
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  4.     if [ -z "$pid" ]; then  V7 F. A/ w; F# u- v
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
      x/ L1 V8 I9 t- k' l$ f2 R
  6.         $FAIL2BAN -x start > /dev/null8 a7 T3 L3 ^6 _( X6 F1 c  Y2 s
  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then" U# @- |+ |9 S3 d' r
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success. |. X7 G: R& D9 `8 |* I  \2 b
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
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  14.         echo_failure
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  15.     fi
    1 G3 G  ^$ C; R6 ^

  16. # R& l/ y; x1 i
  17.     echo
    - T- b$ a4 J! S9 v1 b
  18.     return $RETVAL* h, G) U7 M$ s7 P
  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: "3 s& M7 E" c, ~3 m& g
  3.     getpid
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  4.     RETVAL=$?
    + a; _: j: m8 O: s/ a
  5.     if [ -n "$pid" ]; then
    % X; h1 w( B$ ]% n7 v% G1 G6 r
  6.        /sbin/service iptables save # saves banned ip's  q- A: X- S- r! T" {8 y9 H! j
  7.         $FAIL2BAN stop > /dev/null# Q: W5 X+ O: h8 ?
  8.     sleep 1
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  9.     getpid( t& j& D0 P! u( z9 M' h9 X
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
    $ Y' ~6 b' C% G6 {5 }6 I
  12.         echo_success* r, u. d- ?0 b8 Z5 F0 f
  13.     else
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  14.         echo_failure
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  15.     fi; K3 B. U2 I: E1 A' z
  16.     else' e( N+ w; u  M6 G; Q  j
  17.         echo_failure" x, G3 I  J( G3 p9 u4 g
  18.     fi$ y2 P# f- o( j7 d! ~$ y
  19.     echo$ G( m, |' Z8 X* z; ~- K
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨  Z8 p6 i) f8 X+ N6 m
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chkconfig --add fail2ban
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p.s
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http://blog.pulipuli.info/2011/07/centosfail2ban.html    p& F" u% R, w! p0 w, N* }- Z
http://www.vixual.net/blog/archives/252
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