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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 6 V# X/ d; U. N2 g

# ~0 ]! Y0 _; {8 e啣:
# n! N+ v  G) g+ @8 }CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
  t( v0 z" J  V' J- V* P1.肘um摰鋆fail2ban0 F& B9 m& F# ^! w
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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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/ ^1 U/ Y* m; {5 G

) X& y+ ]% r1 W% m2 Hyum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- G- `5 [3 l. J( U) k$ M. O& _
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vi /etc/yum.repos.d/CentOS-Base.repo
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[atrpms]
5 k% V' ?: V! U) gname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
# r# U, }8 g6 `, {5 h2 V. q3 u9 Cbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable4 |5 o6 J9 b" A  w5 @& p
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms) ]! z  E7 s6 S+ H* I
gpgcheck=1
/ l$ x+ c2 d: B2 C2 b8 renabled=1' @% A& h" H5 I  _6 w, f: T/ Y) t
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2. 閮剖fail2ban6 K7 X3 a" ]! `$ `+ J
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
- H" O9 f! a) @" `2 J& U; hvi /etc/fail2ban/fail2ban.conf
  b! ~! l. ~2 ~靽格 logtarget :, J3 M" r( u* v  Z% j
  1. #閮剔
    # H+ {3 G/ f" i5 [1 R
  2. #logtarget = SYSLOG
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  3. #隤踵游
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  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)" P4 h8 h8 _4 B' S9 a" ^3 C
  1. #閮剔
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  2. #backend = auto
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  3. #隤踵游
    + ]3 n7 Q, F% I$ j  n! }
  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. z* M8 Z# q5 P+ M
  1. [ssh-iptables]
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  2. #臬血
    ; _8 {2 a$ j4 X
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳- U5 o- p' u# s: s+ ?
  5. filter   = sshd
      T* O0 i# u/ B+ O
  6. #iptables閮剖- ^, o9 W" `) H- c
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]: H, V2 {# @' G0 ]
  8.            #潛餅撖靽∟身摰, d; Z  I7 D2 V0 m5 c, k! V
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]. o8 u; Q. n/ o; _) O" o* \

  10. + j  t2 ]% [& g. p# b. U7 |
  11. #閬閮瑼
    ; }5 o( p; W& E, r9 ]
  12. logpath  = /var/log/secure/ z8 p. R; _: L4 p0 j& z7 B
  13. #擃閰阡航炊甈⊥$ j8 i. L$ I$ V  d* @( ?
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
    7 \2 f" s! D' f! E/ \: }
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
% W, t3 ]0 B6 q) e7 E& O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: d5 K$ L, o: S
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆4 L9 }& @" Y$ x
vi /etc/init.d/fail2ban3 Z/ B8 h2 A. m, i  f1 y, B8 ^
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid9 o+ Y- Z1 j0 _- i9 i
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban. p7 {! a9 }" S" n
  6.         $FAIL2BAN -x start > /dev/null* K7 T, U5 S5 |. ~: O! m) L
  7.         RETVAL=$?2 K1 A5 Q4 w. Y$ L0 S' }% }
  8.     fi
    : y$ C, i* U( i, h9 d% u7 N
  9.     if [ $RETVAL -eq 0 ]; then4 O* h3 i  H5 C4 g$ q: i8 t( b
  10.         touch /var/lock/subsys/fail2ban
    & w- o# k" D" W1 u+ C
  11.         echo_success$ D# s' ~0 S" A0 F& T0 U. y
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else( G, I4 m. O  c# [' p. L9 r
  14.         echo_failure; [, \1 K! A6 ~  S8 v$ r
  15.     fi7 C- {- o7 O- G  O4 u4 T! Y
  16. ) r5 V  `8 J3 a/ D& C  M1 h
  17.     echo8 ~# S; J; n8 s$ W
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {, G3 z( V* ]6 W* X; S# F/ h0 s( D
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "  P9 u) u# j$ b! B! B
  3.     getpid
    " ?( x6 Q8 k' V  i, g" I
  4.     RETVAL=$?' w/ V8 G: m! k
  5.     if [ -n "$pid" ]; then( e' {( p5 D, _, c7 g1 A2 S
  6.        /sbin/service iptables save # saves banned ip's
      i/ d) d) c$ I* J- L1 ?; F8 z
  7.         $FAIL2BAN stop > /dev/null6 x1 q1 j! V1 w% A6 C
  8.     sleep 1
    , D( q$ K+ o2 ?! H! x' m  M1 s! {# k
  9.     getpid/ E; T0 E8 s( ?: ~3 m3 S& w
  10.     if [ -z "$pid" ]; then( B0 G" |* \) J7 R0 m( L& [" M
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success2 R9 q7 O' L, \  E/ p8 F
  13.     else
    + q/ h5 R# n! |+ d4 l
  14.         echo_failure0 Q; E6 V5 d: B. |* }  P2 r
  15.     fi' ]3 T, B: e3 U' ^/ }( h* |& q
  16.     else
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  17.         echo_failure, @' w* [7 B% T5 {3 k* ^& B! e
  18.     fi
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  19.     echo* O  k1 I- Q6 P* c, @# J2 B
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨. r% B" }( ]0 w5 \
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chkconfig --add fail2ban
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隞乩 :+ S$ [' w% r. M( |
http://blog.pulipuli.info/2011/07/centosfail2ban.html    O8 r' z0 b5 `( [1 }' E/ W
http://www.vixual.net/blog/archives/252
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