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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 $ Y- i. |3 @+ S0 i4 F% 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
/ n- Q- n& w8 [1.肘um摰鋆fail2ban& x. [7 F( x  @5 p
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)1 }9 _" F) f- U9 T: i/ ~
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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; |+ x, F! O. E7 a0 S/ H4 ?

6 h6 V  |; [+ A  {! y. pyum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! A# d9 c. E1 E/ x; z
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗6 Q5 E# a! t. m5 i5 F0 z

; G! ~8 ~+ n8 W) Qvi /etc/yum.repos.d/CentOS-Base.repo- ]8 s: C8 U8 I% N) p3 Q
冽敺乩誑銝閮剖嚗7 Z7 z, n. I3 V1 Q) K
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[atrpms]
4 b6 A' n7 |9 K3 Pname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
% w3 S8 |2 a0 s, z2 y: e0 Q' dbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
! n; I6 s1 N/ |( N. O5 {0 n" d2 zgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
! Q  v' [8 m+ D! {, hgpgcheck=10 z' f6 p( s' K2 z3 ]. \
enabled=1" W& z) g' b& R; H" p

( T- c# G9 [1 z$ y( v4 D2. 閮剖fail2ban* [- M  P( S0 u7 }
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
) ]. S3 j! u: P6 w' wvi /etc/fail2ban/fail2ban.conf8 f" k$ ^" e& O9 I
靽格 logtarget :
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  1. #閮剔
    # C0 ]" m2 |) n& B. J! n
  2. #logtarget = SYSLOG
    # ]0 `0 d! e3 D, A( M/ G
  3. #隤踵游6 B7 s- q4 C7 e
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)/ K% W! h+ K9 B$ w+ ^3 K
  1. #閮剔
    # d+ J5 ?% W0 f& ?6 v; F- g
  2. #backend = auto " N' r3 N: l6 U
  3. #隤踵游
    $ a& q4 P% S5 b, Q4 s! A. 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) u5 g; V& ^) c
  1. [ssh-iptables]
    2 J1 S0 s2 W" m7 ^$ Q7 J0 ^
  2. #臬血
    * e: V9 k  h6 P+ O' w" X" M
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳3 S! ~7 Y9 G. E+ g* P
  5. filter   = sshd; n2 M6 W. n9 b0 {1 z
  6. #iptables閮剖  _5 l. X7 ]" h! o: e6 V: x
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    $ B9 r+ s6 X3 Z6 y
  8.            #潛餅撖靽∟身摰
    / H4 G' O) C2 I5 e
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]. j* p# U! N* p% u7 }6 Y
  10. ! z6 E/ r# e5 [
  11. #閬閮瑼' R7 P. A/ `% l, b6 a( p
  12. logpath  = /var/log/secure
    2 C' b% e( A$ M) Q, P- J
  13. #擃閰阡航炊甈⊥5 Y+ r' ~5 d6 r* K! i2 K
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
    + r9 r2 C" |- Y% I9 p
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
9 M2 a4 h; C) v$ M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
- b' e  J8 w9 _4 q4 C; ?憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
4 z( k" \2 b+ { vi /etc/init.d/fail2ban
- R9 C1 h3 i# h! C曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗& p4 F3 w$ Z' E/ Y! E+ r2 q0 H5 m
  1. start() {
    $ a6 B( b- c8 ~# Z* ~' P) _5 @
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: ": }) U6 M5 ?' E: }
  3.     getpid( B; q; R; G! D, o2 a3 B  Z
  4.     if [ -z "$pid" ]; then
    7 G- J' t$ F. h' B1 P
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban6 v9 B8 m1 u& O: c
  6.         $FAIL2BAN -x start > /dev/null: c3 ~2 `$ |; R  G9 G" R& B
  7.         RETVAL=$?2 o' G* F( l3 ]9 I6 Q3 H' H2 D' f- j
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban% H) J) z+ k. i6 b
  11.         echo_success" U  j# T* }, w7 c4 @3 m5 e
  12.         /sbin/service iptables restart # reloads previously banned ip's5 f7 d) ^' x5 H  B) K4 N
  13.     else( W2 n) O5 _% `4 j' ?( C1 l4 Y9 |
  14.         echo_failure
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  15.     fi
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  16. 6 T( t4 T( }3 z# P0 Q4 _4 b
  17.     echo
    9 N" T; Y1 J# o' {2 x- D
  18.     return $RETVAL1 e; {9 C$ T) H: [% _$ r
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗& M+ H+ p' g- b% o" Z0 a
  1. stop() {
    ; B( [( n+ L8 H0 d
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "3 E- z9 C! R; W' ~$ z
  3.     getpid9 G( v& q9 u' k
  4.     RETVAL=$?
    ; X3 i, x: P1 }, g( Z7 U
  5.     if [ -n "$pid" ]; then/ G8 }  S9 ^$ K5 P; Z& g
  6.        /sbin/service iptables save # saves banned ip's1 O( ~. B' P/ o6 l" g; D# d- Z
  7.         $FAIL2BAN stop > /dev/null! u3 K  i/ p" Q' R( k7 _
  8.     sleep 1
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  9.     getpid/ l4 y: \0 E$ S9 \" v2 T7 q
  10.     if [ -z "$pid" ]; then- p$ H' ^5 b0 o4 n( C( R
  11.         rm -f /var/lock/subsys/fail2ban& w. C; t% ?% c' {
  12.         echo_success
    # r: t  v+ x4 O8 k4 E1 C
  13.     else4 u% [7 n' U0 o/ S
  14.         echo_failure, F0 \4 P/ Z% ^  r& c9 L2 G, d, J
  15.     fi) @# p$ X& r# P5 ]5 I/ [
  16.     else% J. ?$ G7 u$ Z. M$ ^1 {7 }' X7 B7 M% ]$ y
  17.         echo_failure4 j  r" K" o' y& G4 E. S5 ]
  18.     fi1 q: Q/ S# l) F0 z8 O
  19.     echo. H$ t1 P. q; t5 L
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
" _$ H& }2 a% j. _: w. p
! s3 b, p0 ^! n1 D5 u# Schkconfig --add fail2ban9 I+ b1 t# {8 k2 o9 Z+ ]; T1 J, O
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隞乩 :
4 k) v. K, r& M( ]http://blog.pulipuli.info/2011/07/centosfail2ban.html  
: V, V$ A+ k$ m, s+ Rhttp://www.vixual.net/blog/archives/252* M8 Z# L$ ]; U' I* E

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