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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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啣:
; T0 ]- a9 a1 n3 y8 l3 f: D( _CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗2 g& s) P6 ~, ]: \, w9 N5 J& s
1.肘um摰鋆fail2ban
' u% N' o: c; G% Y5 myum -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)
* A( F8 V5 P. t; U
* ?: J) T8 b! w. R1 m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
  D8 p7 j7 T1 K
9 P/ G% h! N, _& Eyum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
% P" ^! r+ m7 l1 c( @+ ^0 Q' K+ n$ n4 g$ K) V! p
隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
$ l2 i5 h2 u) R' Q5 P; F9 N% u& W1 w  [3 ^( s7 h
vi /etc/yum.repos.d/CentOS-Base.repo
! j4 R6 J# `# ]- \' h3 y冽敺乩誑銝閮剖嚗
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/ p. ^4 H  |& C( s9 L[atrpms]
, M; y2 e/ O* r* @name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms1 W( l6 G/ h9 |6 C
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable" z4 B  p) m: j8 y! V
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms: q7 W9 R1 |* j& F8 o, T: O1 O
gpgcheck=1
1 }" k; M, l! G% {6 c: qenabled=1
% F0 Q0 t. l# c' k$ k( p  j6 m+ ]
5 U5 y2 U; s* r2. 閮剖fail2ban
6 n' W1 V0 X, f銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf6 x5 h- b" h8 I, ~: h. P7 E
vi /etc/fail2ban/fail2ban.conf+ z# s4 A, D, k3 D) [, L( o
靽格 logtarget :
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  1. #閮剔
    / }4 z  r. A. b9 m  o0 M: J. b$ Z6 }
  2. #logtarget = SYSLOG
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  3. #隤踵游
    * y0 |) H1 G2 W& P( v% r- ~: ^- U; a
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼), c! U+ X  z! o  O: d; e
  1. #閮剔2 m2 o8 Z- G2 B; G2 b7 E
  2. #backend = auto
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  3. #隤踵游
    2 \6 z3 ?& L/ R: \) Z$ C* U% y
  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6 H. P# H. i8 l5 ]3 ]
  1. [ssh-iptables]3 v! [  Z! g/ M# \7 [" S
  2. #臬血
    ) V  P6 K+ e" U" K; [: G$ o6 x
  3. enabled  = true  E& J; z( D, Y2 }8 A/ T' i* W4 V, B
  4. #瞈曉蝔梧雿輻券閮剔喳" M% ~: a- K, r" u5 M* {
  5. filter   = sshd( A$ [/ \' A! X. b! h
  6. #iptables閮剖4 o. d  M+ F& J. u1 M
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]- r2 J' F: i. Q7 t7 {3 @0 z
  8.            #潛餅撖靽∟身摰& ^! n4 p" \9 G+ `* O
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]+ T- m+ z' d: B) q( G: ]" t9 z
  10. & `. V( R% C2 A1 q9 T$ M$ q5 s' I2 ?
  11. #閬閮瑼
    / M9 n8 X2 D  H7 T- j% R! B/ Y3 ]
  12. logpath  = /var/log/secure
    6 ]4 t! Y% C  Y' }! ~% U- r
  13. #擃閰阡航炊甈⊥( g8 u9 c& L: Y& W9 w; {* Q& ~
  14. maxretry = 2, G3 G7 |! t' U4 [! X8 b
  15. #餅嚗-1銵函內瘞訾餅$ ^, r8 F5 F. _, t: y5 I2 Y2 A0 x" k) m
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
" Y$ I% U9 E; X1 n  {/ N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
9 Y8 Z" b  R7 B) v2 \憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆; T# Z# O; m! y- ~% Q* P
vi /etc/init.d/fail2ban# ]  F# j* {: R4 l* ~1 }% P. J
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗  f( c3 k1 Y* U, s
  1. start() {9 m! \, y; r$ K, v' n2 T0 s
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "& v4 q1 o) i9 D
  3.     getpid/ L; r( H, }% Z1 [6 K: O4 k# F
  4.     if [ -z "$pid" ]; then* |4 A3 U5 Y2 D
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban6 p  \: N2 {3 m6 y/ Q, ^) j; a
  6.         $FAIL2BAN -x start > /dev/null* k5 d/ k9 O6 O2 @
  7.         RETVAL=$?8 }2 E7 {3 _8 D  E: r, g$ y
  8.     fi
    ( C! d; o1 E4 w" V
  9.     if [ $RETVAL -eq 0 ]; then
    1 p) f% j* j! B  |" B) F4 l. O# ~6 s
  10.         touch /var/lock/subsys/fail2ban; Z' t' F3 X9 C8 e
  11.         echo_success' Y& O7 `$ b: }
  12.         /sbin/service iptables restart # reloads previously banned ip's
    & V1 a/ i1 ^. h' H- K% \( o
  13.     else; j/ }( I" b; T3 y9 @
  14.         echo_failure
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  15.     fi3 Q6 p  e3 X) V6 J
  16. 8 E( b6 a- {; |8 v. \. G, T) P
  17.     echo! i, v, N0 x" V
  18.     return $RETVAL* O! a; E# a0 K4 m
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {2 f$ s+ Y& m: z. I; g+ a* B. l
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    5 V% g+ w4 N. @* ^& Q: c; e, l
  3.     getpid% |  ]- h' P7 r$ {: z" E2 ?2 y9 T
  4.     RETVAL=$?
    9 N( {8 N1 M6 L, S+ T
  5.     if [ -n "$pid" ]; then" o4 [" }5 _/ N. C" A
  6.        /sbin/service iptables save # saves banned ip's- S7 K, g& h3 L
  7.         $FAIL2BAN stop > /dev/null
    ( B# ]" e2 ^$ b
  8.     sleep 1/ U& @+ r4 _* y+ _
  9.     getpid5 H" a9 u7 @. N; K  k
  10.     if [ -z "$pid" ]; then) e& J9 T1 z3 b- o9 p* |5 p
  11.         rm -f /var/lock/subsys/fail2ban! g2 k4 C& H3 A3 [0 X# S4 [+ y
  12.         echo_success; G0 d, I* A: [0 L/ s- a! b
  13.     else
    ! |  o3 I/ Z8 ~& G! O
  14.         echo_failure
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  15.     fi2 }5 ?, K3 W; g
  16.     else
      r1 Y- Y( j+ P
  17.         echo_failure% I; I; E6 X( U! Z' w$ j4 a# L, i6 t
  18.     fi
    / m9 t' d) |8 k* |$ V- z0 B: {! n
  19.     echo
    " w. y5 H- N) ~( l. p
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨8 l$ {6 w0 x# G, _$ k- a

# {/ B, n; M( L) U. nchkconfig --add fail2ban
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p.s ! c9 _6 q  w: U, y
隞乩 :
3 l3 z* @$ e" M+ i% h4 p8 z7 F* qhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  6 I# y; M; v8 T
http://www.vixual.net/blog/archives/252
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