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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 ( m4 `# b2 _" E. L- r6 M

. u8 c' V1 H& L, V. @( x啣:
7 Y2 V( V) \" B9 hCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
  E0 d/ l+ a& U( D; g/ B1.肘um摰鋆fail2ban
1 u& q7 A$ V& Q% P! S( 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)
6 I- _$ r9 {3 Z8 Y6 q7 d' F& L
) ?1 v& u2 y# M' E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" G- ~9 j4 b9 u; p" E

1 p# y* C# V& j% r) m0 r3 K/ o  N% Kyum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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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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* m8 J" a1 q& e) t8 C. `0 Uvi /etc/yum.repos.d/CentOS-Base.repo/ ?: }3 f* Y9 [( w! i" d
冽敺乩誑銝閮剖嚗
6 U' x, ?3 P+ c" h
" s& o8 D, S. w! C[atrpms]4 x+ Z% @; o' h8 y+ \, g
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms1 X0 ~, ^+ w2 j
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable8 F( r( R+ b8 n" W9 {
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
' Q: A' i% `: _; @gpgcheck=1% x8 F1 r5 i: M
enabled=13 t# Z) z# g4 w7 I5 H

8 A6 R* C" p. b7 p+ h2. 閮剖fail2ban& S& y; D; c' S% `* ]7 e
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
: ]* ^# _% W  C, X5 ?9 uvi /etc/fail2ban/fail2ban.conf$ j5 \+ \& Q  p: G% M. {1 |
靽格 logtarget :; J% n2 |+ C* F" s& m. V
  1. #閮剔" h/ t: n. O; V
  2. #logtarget = SYSLOG
    , |2 f+ W# ?- y5 |9 s1 ]3 J
  3. #隤踵游: A! r7 X  j/ s' v; f; t- |
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)) D7 v5 y/ z. J" f2 T. q$ A
  1. #閮剔6 h+ b# y8 y4 ]. v& F
  2. #backend = auto
    ; X3 J2 Q2 a/ q  t' K
  3. #隤踵游% M9 O; h% u; {3 ^7 W" [1 L! w8 o" K
  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]
    ( J5 ~& ]* J& F) k3 w* |" X
  2. #臬血$ H3 h) L' P9 m7 X) e
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳) m4 G" ^7 e) p! d7 w
  5. filter   = sshd% h2 ~9 N! U  s' G/ Q4 Y1 A$ {
  6. #iptables閮剖: g1 f8 @" `: q" A5 f6 j( q
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    5 F( C8 r( i& ]1 ~
  8.            #潛餅撖靽∟身摰0 ^1 x; T* {% |( E2 D7 n
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]+ s) s0 N6 ^1 W) d

  10. : f8 p1 }3 g" R" n, u
  11. #閬閮瑼" e! K" K* J! ?  p* J/ E) N/ M
  12. logpath  = /var/log/secure; q8 d  z1 A. ]6 v( L
  13. #擃閰阡航炊甈⊥
    : u" Z: u. C2 i) a+ y, @8 F. y+ F
  14. maxretry = 2* P. L8 y5 ]/ w# Z- a; ?
  15. #餅嚗-1銵函內瘞訾餅
    6 N" i5 c8 w& [; u: F
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
- d' [5 _7 Y& l, 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
! J9 r( ]' M. Q7 ~2 ~( }$ f憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
* P& d, c# |. G/ y) t; d vi /etc/init.d/fail2ban
( D4 L) Z* @" _/ V+ _曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗# c& m0 s8 [& X& c- T3 a
  1. start() {
    6 \  @# ?/ {) a# r$ P
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "0 G2 o- E3 J) u: v5 C
  3.     getpid' P0 P% B( {- j# [! J& F* y5 x
  4.     if [ -z "$pid" ]; then
    3 w1 \4 i6 J+ O! y" C
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
      f4 r( N* d( |$ @% C4 O7 O
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then. v! W2 F0 R# P% G5 N/ U$ I
  10.         touch /var/lock/subsys/fail2ban0 e3 m0 w( D/ v$ a( f7 {2 a
  11.         echo_success0 {, S  ]4 F! n/ H
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
    3 m, c8 n2 n" T. x, P* Q" r
  14.         echo_failure3 H  ?. V) V$ v; ^; e" f
  15.     fi+ I. U8 [& b* ?; g3 i
  16. 4 b. g& a. }9 N* e- T
  17.     echo
    0 P" a1 |7 K* k
  18.     return $RETVAL2 `( y3 t/ S' C2 E1 K
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗; {' F; b4 m- R0 Y6 ?
  1. stop() {
    9 ]$ o* w- x6 N! p
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    8 D5 I! R6 G" E) ^3 A- @8 k* v/ M
  3.     getpid
    5 e4 c# k( t) N6 M  S
  4.     RETVAL=$?& U5 j6 e8 Y' }- s9 v! w% f
  5.     if [ -n "$pid" ]; then
    % u( N9 v- T( I
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
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  9.     getpid+ s  M9 V9 y  I  x% _/ F, A2 i& G: `
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
    $ H9 Q+ o) {, t! q* S8 {# L" D8 B
  12.         echo_success3 [# }9 l  P2 j2 E, p
  13.     else
    # s: L$ U  T9 E$ G
  14.         echo_failure
    & \) X( h+ u' h& J, H  N
  15.     fi* H4 ^0 ^' o$ j% U/ t1 d' Z8 Q
  16.     else
    ) z9 {  C- Y1 U6 k% Q1 v
  17.         echo_failure
    # r- Q2 E5 m8 b
  18.     fi
    , }, a0 u$ W: q0 N
  19.     echo
    - c" {9 Q5 k! d& I
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨7 P3 v' U2 F: T  s) p

$ y6 ^9 M$ N' m( W' |7 Schkconfig --add fail2ban
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/ C# W; v% J! q5 u# S" j! z1 Ip.s
. ?$ p$ p* J+ S隞乩 :. ~( U! Z8 v8 m+ F; {! v- Q
http://blog.pulipuli.info/2011/07/centosfail2ban.html  $ A. [. w& ?* q1 u, U+ ^- \
http://www.vixual.net/blog/archives/252
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