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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/ C1 I; K  `7 f+ B/ w
1.肘um摰鋆fail2ban
' k  L* }  {0 f2 S0 N5 M2 Nyum -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)7 y/ e- d$ }* p- w" X2 a& X  T, e

+ Y& x# i7 l' Y9 A* j: X9 B; g" r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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# |, D1 M; R& s8 z/ Nyum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atrpms9 y; h5 X/ l9 O! R2 r( R6 w) G

9 J  u8 J' j! F! Y6 a7 u; v  {隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo
& ]6 X/ n2 s+ Q+ \6 Z; f2 t. w1 ~冽敺乩誑銝閮剖嚗
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[atrpms]) A+ r4 U$ O4 P1 m# O5 B% d3 b
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
) u: y" H1 E* n& j: S4 j/ n) |4 Pbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
& ]  r; Y  p, w" f3 ]9 [% Q3 _8 cgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
6 `, S1 L; ?4 M% P8 Hgpgcheck=1
' s0 @1 D. {# {enabled=1
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2. 閮剖fail2ban
9 e' L  w2 \8 a' j, ~) j: m9 ^銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf- }" g# |* c+ M  Y7 r
vi /etc/fail2ban/fail2ban.conf+ Z! N9 B3 z8 s- W
靽格 logtarget :, |1 }4 h2 ~1 r: i$ O, f4 H7 h3 t9 i
  1. #閮剔
    1 f7 y+ L+ S+ W( C% _
  2. #logtarget = SYSLOG
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  3. #隤踵游$ j; D4 Y4 h% M  q
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔
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  2. #backend = auto ( \% ^( a0 a0 r( J/ z
  3. #隤踵游$ F: M, |9 g# @, t; s' e3 f
  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7 Y) U/ S( N8 [9 S  k
  1. [ssh-iptables]
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  2. #臬血$ S! u4 |! [$ Q2 H- g+ C6 ^7 b
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳1 S: _, D2 c6 N8 F$ S4 p
  5. filter   = sshd
    ' }, b6 h! E" f: x+ ~+ @; M
  6. #iptables閮剖
    $ u. b6 u4 L! C2 z  X
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]+ i7 a% L+ x1 u- o1 U
  8.            #潛餅撖靽∟身摰
    3 \$ |/ H' H' X
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]7 z; S8 x( R. B; `' Y5 X
  10. ' `" L6 V- y3 o1 x; O
  11. #閬閮瑼  I4 i: B5 d; @
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
    ) c) }5 g! k6 e; ^7 ]; l1 D
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬' r$ o$ d$ S) Z
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
7 A) L" r- W3 N) d8 C憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
- o9 l; }+ p8 Q4 ^! y% Z8 C vi /etc/init.d/fail2ban
- I2 F. ?! |' P3 O曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {) B1 t- x9 K( P3 J! t9 K" N) ^8 J3 Q
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "2 t5 `+ t$ R9 f1 b9 g* A  u  ?
  3.     getpid
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  4.     if [ -z "$pid" ]; then" ~$ V) c# H( ?- e! Y
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null8 g9 h4 y8 q& f$ Q7 n' V; B
  7.         RETVAL=$?
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  8.     fi6 y: ^0 J( x3 X; x1 g8 h+ d! l
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success7 ?8 J$ j+ y4 Z( K: o; g! o  D( ?& Q* G
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else( L8 w& D# v8 R& L
  14.         echo_failure
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  15.     fi1 g, R3 `' d- J4 O: W, p. @3 w) c0 ^  }

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  17.     echo
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  18.     return $RETVAL: f# I% U; t1 W; Q( s  U
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗. g# k3 q: u4 f' m
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid  J* m+ f1 e- @" j6 c0 j
  4.     RETVAL=$?# U+ G; ]- k; p' p
  5.     if [ -n "$pid" ]; then! Q& A0 y" ~, F$ q6 R& J
  6.        /sbin/service iptables save # saves banned ip's: t+ r& @  A, k) t1 E8 _  m
  7.         $FAIL2BAN stop > /dev/null4 K% f; N1 x. g& v1 m" y2 k' ~
  8.     sleep 10 c" K, I/ H( z) U7 J0 c
  9.     getpid" a7 B$ K, Z3 m, m* v. `+ ?" ^" E
  10.     if [ -z "$pid" ]; then" u& Q8 f) r! m8 O
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success# ?# O1 _9 H  w
  13.     else. h$ Q- P" B" J- o0 @# c* h
  14.         echo_failure
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  15.     fi
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  16.     else/ M3 W: b9 f- c% p7 |
  17.         echo_failure
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  18.     fi1 t& L, E6 u0 p* @
  19.     echo: z) k9 k0 ]& o0 m/ W$ ]; P
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨3 M9 x. Z/ O5 }  h+ L1 A% _  v* ^
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chkconfig --add fail2ban6 C- j- O" o1 I. C0 z
# W2 a% X+ d% y5 e
$ G1 J5 D- h! \' {9 C  y
p.s : q' h( k& i$ S( y
隞乩 :
6 o  d) i" m, g- P$ D" phttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
' H: z% g9 p/ h8 E/ h* c- k# G- Mhttp://www.vixual.net/blog/archives/252
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