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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 |甇摨閬 |梯璅∪
砍敺 IT_man 2016-4-9 22:36 蝺刻摩
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5 T7 R% C5 G3 q0 \$ w3 x3 tCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗  {& n/ h% t! ]! u) I" u; l
1.肘um摰鋆fail2ban9 M0 m, u/ W" s: i+ l
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)
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) ~& |1 J- q, a: L; p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 n1 i& P( @& A6 |! |/ U

1 k/ @' j: m1 K  c0 x+ ayum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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5 X& _1 l! |& @( U隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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; B' [0 s2 N7 {4 K1 hvi /etc/yum.repos.d/CentOS-Base.repo! s( V+ d$ Z5 l! a
冽敺乩誑銝閮剖嚗
" a, E( L3 T" \* V
, Q# J9 ?* V! m  ^$ I[atrpms]
* V( x& g* T3 L3 H$ Fname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms/ Z4 u% G: V2 R7 i+ [1 [+ B& ^  ?7 L
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable7 K, |! S7 F9 e& d& X$ H
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
& P, h% `. [  r/ `* _gpgcheck=1
1 ~3 F* n# Z# g5 r: y4 S  jenabled=1; N: Y. o* d2 B% `4 W
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2. 閮剖fail2ban* T7 l. U/ Z& n7 E8 L9 z0 `8 ?# h
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
0 v$ d+ m& w4 Y3 H" U* X1 {+ `6 Jvi /etc/fail2ban/fail2ban.conf; c6 F+ d) g/ [% n0 d% x( N/ o
靽格 logtarget :( Q& h7 P7 j. ^4 y7 u/ U
  1. #閮剔
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  2. #logtarget = SYSLOG
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  3. #隤踵游
    - `4 g' X" J. J" g1 z8 z
  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
    9 N* N# c* X9 v. Z- H8 r7 Y, A
  2. #backend = auto " H  O/ m8 _4 E( C
  3. #隤踵游
    / z5 ~7 D3 I6 ~& e: M4 d8 d: _
  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0 u6 l7 E$ T5 b1 G3 R
  1. [ssh-iptables]) r* m* S1 L  F: I
  2. #臬血
    4 W4 M0 X4 B) ^4 s! k3 f9 o& x
  3. enabled  = true, {/ ^, w5 Z$ O
  4. #瞈曉蝔梧雿輻券閮剔喳( {- w3 s8 |2 t$ |4 a
  5. filter   = sshd
    4 K$ Z' S5 g# ]7 Q
  6. #iptables閮剖
    8 ^/ ?$ I) }, Z- y' r
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰9 d* ?4 r( Q, j- f5 j
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. , T+ v& }! W5 d
  11. #閬閮瑼" H: \# {1 W; R' G5 a
  12. logpath  = /var/log/secure. S- A# f( n! W3 I+ K6 d
  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2: p* H1 w9 ?* y
  15. #餅嚗-1銵函內瘞訾餅
    $ w: n: s1 G0 E2 ?; i' P4 M5 k
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
0 ]2 z+ ^: {$ e" v* S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$ J4 g0 Y+ L$ p. G+ e7 O$ @1 e1 `
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆* A) b/ g  W. M) ^) K
vi /etc/init.d/fail2ban  p6 h0 S$ J' G1 [6 U, b! N6 j
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗% x8 g  @) [, H4 g& e
  1. start() {7 f2 F9 ^$ a+ ]4 l
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  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 fal2ban0 t+ A& ^6 }: U, S
  6.         $FAIL2BAN -x start > /dev/null7 j9 I  `. Y3 ^$ u
  7.         RETVAL=$?
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  8.     fi
    1 a& L0 u2 D1 f6 g$ ~, {
  9.     if [ $RETVAL -eq 0 ]; then
    ( K4 ~! k8 j! m. R, ]
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success" ?# A( k6 o  x& j8 t5 u
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else5 g2 S, @% [$ k7 z( r2 X
  14.         echo_failure
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  15.     fi6 D+ Q, M1 b* [  r4 E

  16. : G9 t/ B- X6 L9 Y2 Y8 ]/ W9 X: w
  17.     echo
    ; s$ H  i/ H2 Z4 u2 ^
  18.     return $RETVAL5 W/ c5 U1 G4 {- a( H# w
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗1 v5 C. x0 H2 U$ n/ _
  1. stop() {
    # I$ ~1 |! `& u/ ~
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid5 v: T0 |1 M% n, {
  4.     RETVAL=$?7 D+ K$ L+ m# a% h4 N! d% ]
  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's" R2 B: }2 E& |% h
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
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  9.     getpid. J# h$ j) x8 z* T8 g; z: e' z' k
  10.     if [ -z "$pid" ]; then
    # z8 {& A+ R; Q' P) K  Y
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success  l: T* W/ p+ @3 {/ j- f3 v
  13.     else
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  14.         echo_failure
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  15.     fi
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  16.     else& e8 ]- R$ _2 o5 L- i8 A# i
  17.         echo_failure
    & M/ i" P' h6 f4 ^2 O9 C: ]& ~
  18.     fi
    % {  g+ z. l/ n/ s5 v$ M
  19.     echo9 R7 ?* u# {% G  m- i5 h, y
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban  \6 F8 G$ L5 z7 P" m0 }  y

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p.s
5 ?$ l* t8 S( D3 e# V9 T: b! `隞乩 :: `( e' e+ Z1 h3 }6 K
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
  |& T! K! r  i4 U: [4 ~. M( Khttp://www.vixual.net/blog/archives/252+ O( C# K5 C3 _  X5 Z, e

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