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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 ! s+ ]! v/ r9 u; M9 U' x" c

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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
; [. A. P1 s. K; \( b' N: G1.肘um摰鋆fail2ban
4 ]. q: ~3 q3 o- [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)+ ?* `# _; x9 Y" r
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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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  {' M& I% a" F% |9 z' Xyum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) X& T" p& l2 Y+ ]
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo
0 h' B2 y2 O( o) G$ h4 S冽敺乩誑銝閮剖嚗1 i8 k) j1 m' x: t

6 W# u$ T6 }3 n" g; m1 Z[atrpms]
( e7 t0 I9 X  iname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
& B/ @5 I! ~& s: B) Bbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable; c6 m- L1 I1 M% Z5 X$ I
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
$ W2 H( i9 ?. N$ T* ~gpgcheck=18 a3 O4 R! \7 f9 t
enabled=1
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! s9 }) x! n$ W' \2. 閮剖fail2ban6 E; n" u9 ]9 u
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf' L1 p8 ]6 a& C8 U, w
vi /etc/fail2ban/fail2ban.conf1 M- U( a1 @2 r$ d! n8 N1 w$ C( _
靽格 logtarget :% O8 F* d- e: W# K
  1. #閮剔
    3 ^: u' {0 h$ {" }9 f
  2. #logtarget = SYSLOG. u& B1 T- V1 J0 z/ V/ B
  3. #隤踵游. a" f0 Y) `0 l: ~9 F% w! `
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)+ W  A" O' z( r  ~: l
  1. #閮剔7 q$ s8 L/ j; @+ \& B
  2. #backend = auto : M9 A1 J1 X1 D% V
  3. #隤踵游" ~& ~9 m) ]* l0 X
  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
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  1. [ssh-iptables]
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  2. #臬血3 ?+ q1 x; }+ I7 P- K
  3. enabled  = true' w9 o, m7 Z* s4 Y0 E/ ^/ ]5 C
  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd
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  6. #iptables閮剖$ @3 C% i' D  J! z, E
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]  `. F% ~/ e" v, A  B+ R/ K5 Z
  8.            #潛餅撖靽∟身摰
    3 P" M% O2 g' ~0 C
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. ( ^6 C1 y: c% M& r6 n, S& P' C
  11. #閬閮瑼
    7 T& U/ M6 @* |- K
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥7 G; s  J& R2 L8 L2 U4 L# l3 |
  14. maxretry = 2& U+ H" g& e7 u2 j+ z
  15. #餅嚗-1銵函內瘞訾餅
    8 H( @% X: K; M$ R5 S1 K
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬. a  d8 D  s* _" ?7 n2 W$ L. 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erver9 C$ ]% u0 U+ s+ c$ V
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆, u, X& c5 W6 V, ]4 R9 [5 _8 Q
vi /etc/init.d/fail2ban
0 S* o1 ^- c3 d( t* ~  J0 r曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗5 O" Z8 z# t: w5 E, A# E0 T" X
  1. start() {$ w+ e7 u9 Q9 _" c
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid9 b* T% H4 E  ]2 W' h; j* Y
  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.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?) v( D" m$ u3 d6 L! ~
  8.     fi" B5 u8 r! d4 [, W
  9.     if [ $RETVAL -eq 0 ]; then
    $ P! D* B3 \7 e! i( m4 o
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success
    # U2 D, z% F- `7 l* d8 ?
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
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  14.         echo_failure$ K+ Y) j  n1 o
  15.     fi  i* I3 P7 D9 {# ]
  16. ; {4 x6 O4 o8 L. V! A
  17.     echo+ h7 v! q' O+ u: a3 C8 R# b
  18.     return $RETVAL0 T% G% y) ~5 i# _+ }
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗- [% O% s% i6 ?; {
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid
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  4.     RETVAL=$?. |. b# i. y6 E) G
  5.     if [ -n "$pid" ]; then6 J2 I6 q: Z. i2 v3 g0 N& y
  6.        /sbin/service iptables save # saves banned ip's" T0 K9 L) f, _3 X; P, E7 R
  7.         $FAIL2BAN stop > /dev/null: k) _5 G5 y+ Y' B& q
  8.     sleep 1
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  9.     getpid6 ?! K  S7 q3 G- }) z
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success5 L( a3 B* J# y
  13.     else: e' A; s6 h3 S  J& ?4 F" }
  14.         echo_failure( I) E5 g# Y8 B' R; D, g( C
  15.     fi/ T, Q4 Q, Y# p: P- y: r
  16.     else
    # ?2 ~  M" h! s) I$ D7 P
  17.         echo_failure( g- n8 H; m  {3 _( f7 Z
  18.     fi
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  19.     echo6 n; ~* ~, w9 N& }/ K
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨1 ^6 K: B* ~7 ]  t

0 k+ i, |% L  D  }4 t1 schkconfig --add fail2ban5 V6 v2 u+ v% j6 g

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p.s 3 }0 ~8 z, \2 X! r2 r: z
隞乩 :
4 m$ p* X2 g- r8 rhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
* Q- A) d$ ]2 I. N7 w# Fhttp://www.vixual.net/blog/archives/252
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