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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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+ E8 z+ [% A5 Z0 D6 }8 R6 c0 @CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
% F0 q3 f5 K7 t4 W, G  p1 r1.肘um摰鋆fail2ban* t& S& }: Y; ~# R; 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): o  \& x; e" E2 \# B8 v- X

3 P4 H7 x( \, a' O: {0 l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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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atrpms
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8 q8 e, g* Z0 u7 \- |2 ~2 E隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗. r2 E7 @( G6 A3 F* r
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vi /etc/yum.repos.d/CentOS-Base.repo
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[atrpms]
3 E! q+ p/ ?) ]$ y$ m. dname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
5 _, }; e8 l0 p+ n5 qbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable+ R* Q3 T( g3 @3 ?8 A
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms" H. K# O& ?' y+ Z
gpgcheck=1# j% l4 U) ?- a$ z7 |1 W! y
enabled=10 C9 d! q; x! O1 [6 ^
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2. 閮剖fail2ban
( a* U+ B, x+ E  e9 c銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
6 k: t/ x$ U3 J# ?vi /etc/fail2ban/fail2ban.conf
$ c. ~3 ], W* {. G; J6 l. Q靽格 logtarget :
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  1. #閮剔% }  F; A) d( p  X) t4 G/ L
  2. #logtarget = SYSLOG, @6 G; U8 l. s
  3. #隤踵游: I2 r" R( D' S) p! R
  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& }3 y+ Y( Y) O
  2. #backend = auto & u# t& j( D/ r$ v( z5 ?
  3. #隤踵游
    4 E9 E( H! |  k% c3 J
  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]
    & z2 `+ l% a6 b. Q- l
  2. #臬血! k1 _8 Y: T" ~/ V% g
  3. enabled  = true
    & o. L, y1 m% E
  4. #瞈曉蝔梧雿輻券閮剔喳7 j: Z5 z2 x7 j/ ?
  5. filter   = sshd
    ! D+ V; o+ D4 Z' i& o3 @$ v5 O
  6. #iptables閮剖, o1 M- C$ g" I; O; d* I
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]7 T) M; u. d+ M' y
  8.            #潛餅撖靽∟身摰
    # j" j- B( h$ Y1 g) A( f  V  @8 H" p
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]' \5 t' x5 P* h  [/ Z$ H1 e

  10. & H3 K: p6 O/ l
  11. #閬閮瑼
    1 ]% B. J' b9 N/ O3 _0 e& h) S
  12. logpath  = /var/log/secure6 S/ S+ ~2 H' i* c0 k
  13. #擃閰阡航炊甈⊥# ^$ w9 Z& v! ?6 S8 V; d
  14. maxretry = 2
    $ A4 u& m. b( n! N% |  I0 ~. `
  15. #餅嚗-1銵函內瘞訾餅0 \& r% v5 G+ I
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬# x' g" O2 u  w# c( h, I
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
! J# O( ~# H3 D2 b% j, P& y憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆4 E* J- j- u6 ]) i" m
vi /etc/init.d/fail2ban2 G( k) T8 r. G& |
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗7 [2 [, A2 c7 t6 x6 V8 F
  1. start() {& G/ u* o! t, [3 K0 K6 U3 K
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "$ S, q2 w! j* ]
  3.     getpid
    $ s8 T' U: c; F# L! o/ A2 w2 n% ^
  4.     if [ -z "$pid" ]; then
    7 I6 i: f" F( E, i
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban- I3 s& y, u$ t* v8 }9 k$ F$ q2 @
  6.         $FAIL2BAN -x start > /dev/null
    # M7 {' N4 R* U& M  m6 W
  7.         RETVAL=$?5 V1 J- z3 B/ h$ Y) V/ g/ J/ Y- Q
  8.     fi8 m* V* d  v+ h/ r  V0 Y: C( f0 \
  9.     if [ $RETVAL -eq 0 ]; then
    # q- t- Z( n* p' G/ @1 W: Q5 K& u$ p5 h
  10.         touch /var/lock/subsys/fail2ban) Q: N7 d- t8 @$ O! s
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's/ h; O6 O4 i1 x4 Y7 F( W) z
  13.     else- f% u- S& p7 Q9 G0 N
  14.         echo_failure
    ) f  ^2 D1 S  ~3 e/ l$ U* S$ }+ S- h
  15.     fi
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  16. + ?1 D$ q3 m2 s3 t3 w+ L
  17.     echo8 B6 e, S! t3 _$ U4 R
  18.     return $RETVAL5 ^, x0 m- U+ ?. p5 V
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
# h& _8 K& j( ?. x$ {5 P
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    + A- B" a; k" S4 @
  3.     getpid: s  [( C- b1 p6 r
  4.     RETVAL=$?
    + e1 c7 i8 P# P
  5.     if [ -n "$pid" ]; then
    # V4 F! b7 L0 d" M* C; O7 T
  6.        /sbin/service iptables save # saves banned ip's
    - g" ^+ m/ {3 U9 r0 _9 g/ Y
  7.         $FAIL2BAN stop > /dev/null2 j3 R* O) ?' d; _1 J6 z
  8.     sleep 10 I* B, w+ S4 c/ g
  9.     getpid
    ' b; J) V$ ~( I" a8 m4 }" z  d
  10.     if [ -z "$pid" ]; then0 q( |% S/ V7 t6 {5 R- E3 W+ [& ^
  11.         rm -f /var/lock/subsys/fail2ban% v' H; {/ b& G
  12.         echo_success
    . {% i% h7 A% l. X. s7 Z# q
  13.     else
    - F& t2 z. O+ O
  14.         echo_failure/ `5 @: \+ \" G! T, Y7 H
  15.     fi
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  16.     else
    0 ]+ ^% F' @+ f& i4 L
  17.         echo_failure
    # i" \  M" M' J4 c5 b: @
  18.     fi
    ' L0 @2 t- m# l! a. X
  19.     echo( u+ N6 X# M8 B  x% R% s, a4 ^; t/ I
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨: |/ Q+ e9 w/ C6 C

4 S) F( ~6 [2 A4 O" D  achkconfig --add fail2ban
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隞乩 :
+ W3 S- B+ G, k. m& e- t% E8 ?+ fhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  5 p- V' F# Y  {# \5 O  o
http://www.vixual.net/blog/archives/252% l$ V% H+ ?% Q

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