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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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啣:
% d1 v; U& t. @3 }6 d+ b0 JCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗* H; G; p, A1 |! [# S
1.肘um摰鋆fail2ban
% Y( ]7 M9 L3 J2 k0 C8 E  zyum -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): Q# g* H2 h; I9 W  {
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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/ @) H: f+ l  Z( e2 c
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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atrpms8 [9 W/ @  A' ]. c  x
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗. o1 b* w" d4 P& H- u" ~7 s2 o
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vi /etc/yum.repos.d/CentOS-Base.repo6 K  B9 \* Z- l& \
冽敺乩誑銝閮剖嚗) @, b* |! a, `6 f  }4 r
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[atrpms]
+ r  F- t8 N# p0 O9 {" p! _name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
3 l7 f" x. o- k# ^baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
6 V6 j5 n! P( U& Ygpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
2 I- Y" d! M0 I9 L+ j- sgpgcheck=1
9 N  `' Y0 E: H; a; Nenabled=1
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& `2 i% M' {7 w0 w- b# {& i2. 閮剖fail2ban5 A* ~3 H# {; `3 o0 s4 a# U
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
0 o. O5 |1 M; ?. K# rvi /etc/fail2ban/fail2ban.conf
5 t* s% V1 I9 e7 B# L; h. P. b5 U靽格 logtarget :
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  1. #閮剔/ f  k& S6 L; ~1 @- ]
  2. #logtarget = SYSLOG
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  3. #隤踵游( w. L2 i+ s  }1 J
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)  F% v# B3 C3 I0 H3 m( ?3 @
  1. #閮剔
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  2. #backend = auto $ [  w- `, Z. `; |! @$ s% K9 V
  3. #隤踵游, t0 i. K" f( ~3 |
  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]
    % g# P" [7 r/ j  }0 L- Q2 {
  2. #臬血
    2 |% C+ T( ~9 o
  3. enabled  = true- Q9 ~3 p6 X" M6 \4 `) ~
  4. #瞈曉蝔梧雿輻券閮剔喳  Y( C( v! ]1 u7 e' @  g1 f
  5. filter   = sshd+ R0 Z! b! C. Q. m' h6 s
  6. #iptables閮剖8 b8 b$ Q- }& r5 G6 b( U
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
    ; a* U- ]% I5 F) V8 A
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. & s8 g# x4 ]9 ]8 D- A) l2 N
  11. #閬閮瑼0 C4 w; _  [* r* x9 R
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥7 `- M! J  }. W9 V. n
  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: G4 _: d, G5 v' a0 d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
8 [7 M1 ?6 A- x% b$ L$ O憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
& h7 e; g% E% k: y+ `2 y. x' E5 k vi /etc/init.d/fail2ban) r, k- {9 K/ ?+ h9 R+ ]
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗* d8 K$ s$ s! S/ n" T1 l
  1. start() {2 u+ r  f1 A; ]* E) p9 C. G. ~
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "  a" ]/ M/ B5 g3 m7 T/ ~( p
  3.     getpid
    $ N( B8 b( H. B
  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.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?# }  T7 ]' {$ L- z0 K5 {% K0 j0 k
  8.     fi& o6 U! m6 r% a+ S: ^
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban# r4 z. [6 b( a
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's7 c, c8 K( K; [
  13.     else5 L* b7 l2 S1 g3 `! _8 G6 c
  14.         echo_failure
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  15.     fi" `4 Q7 V6 T" w
  16. 4 V) Q7 K- V  N/ y
  17.     echo  N) F' s8 P+ P* A* Q- q3 W
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗! K* }2 L, R0 g' G# b
  1. stop() {  h0 u; M& m7 @/ D* U
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "0 P. F; z/ Z. d- `
  3.     getpid9 E; Z7 J# Z4 {1 l
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then' q  w5 E. C6 ^9 l3 I  {' W8 W
  6.        /sbin/service iptables save # saves banned ip's/ d8 ?2 u/ D, ?- V$ t( v9 G2 T
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 14 _* I2 |% W( W  m+ ~/ ]( c( ~
  9.     getpid
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  10.     if [ -z "$pid" ]; then
    % A6 S% g+ n0 j" r& g
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else& A' j+ L! s9 _! r) O2 S; B& b- P
  14.         echo_failure" f' }$ B( x& I
  15.     fi
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  16.     else2 {: C6 Z6 w3 T1 l7 Y
  17.         echo_failure$ l9 N( L* k1 L  F1 ~
  18.     fi. y7 j; ]: r) C" o" G9 v0 y+ @# R& S0 ~
  19.     echo! `4 L! d& C% |6 H
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨. v3 i. N+ l% C2 Y5 n. @- A4 M
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chkconfig --add fail2ban6 n# J2 b$ M- Q- B$ O5 l6 O$ Y- I
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p.s
6 T8 O% W/ g9 S1 A9 U隞乩 :& I- k+ R: }& `. W, X  r
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
0 b; f3 y% ]) q1 ^9 Thttp://www.vixual.net/blog/archives/252
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