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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 ' h! N( q! Q0 \9 C  n7 \) ?5 b; ?

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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
. ]2 c7 K/ W3 D* ?2 m% v1.肘um摰鋆fail2ban
+ t; Z9 h+ q9 J: `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)4 y6 Q+ \, s& w% a1 `; h
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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 Q' I  v' S$ f  c$ w; L- |; T, ^
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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. l2 K; l1 R4 K/ N  x- q

6 p  z# f' F( [; R( y隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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  R. s/ y; `( M% a6 ^9 xvi /etc/yum.repos.d/CentOS-Base.repo
" f& p1 A) n% [  J! O9 d% [+ k冽敺乩誑銝閮剖嚗9 J3 h5 H! d' F. P  {+ X2 K3 ~$ Y
# W" x& c  X; V. t6 y* s+ \
[atrpms]) l2 {. C& E" T
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
4 A" r7 W: G6 Cbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable1 r0 c0 [# V" y/ ]  H) h
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms, F7 m! `" Z: b0 H- R4 Q- |& R* R
gpgcheck=11 z$ B0 ~) t4 K" d
enabled=1
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; W/ ^( ]! D& }4 ]0 D2. 閮剖fail2ban0 U8 p6 s/ L6 a. }& Q  f
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf$ j( N) {* S" _7 _
vi /etc/fail2ban/fail2ban.conf  P( ~% d5 M* @
靽格 logtarget :5 ~* R5 g3 \$ Z; \% H" f4 p  z
  1. #閮剔8 t/ k# ~  I, m! V3 C" [0 F3 Q- m2 p
  2. #logtarget = SYSLOG7 L' F) ~2 ?5 n. L2 |% i: l  L
  3. #隤踵游
    * x+ x: f( {, R) I+ H% {
  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, o5 |% [1 w, x; m
  2. #backend = auto
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  3. #隤踵游" @1 _5 q+ m' z( g
  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5 }3 W- l; o1 G4 A4 }9 j4 w
  1. [ssh-iptables]
    : f5 q: u" C- H; _  p3 V1 v
  2. #臬血+ _% Q# y& K6 _; {- }) C
  3. enabled  = true5 J; M% \: P" G* K
  4. #瞈曉蝔梧雿輻券閮剔喳3 q# Y  }0 o3 c
  5. filter   = sshd7 ~- x/ c: K. D: w; P) `
  6. #iptables閮剖6 ?$ c( v0 a$ Q$ }) Z
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]0 P9 {. r  ?, v  M6 W8 y& f' ^
  8.            #潛餅撖靽∟身摰
    - k  c' A3 E/ J% @2 }5 O
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. # W1 Y' _# t* ^4 I  d3 r2 o/ O& d
  11. #閬閮瑼
    , R, ]# ~3 B4 d. U8 V* q2 g
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
    / ^! T2 g9 ]8 ]$ q. o$ {, D. h
  14. maxretry = 2) H' i* {5 K$ A$ S9 o" L& q3 z
  15. #餅嚗-1銵函內瘞訾餅
    9 D8 D* v( o4 z, E' y: D' v
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
  j1 Z. g$ g% U$ J; b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
$ D$ T) P" J, ]5 [! T憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
6 ]4 [6 c, h* _5 e6 n, O vi /etc/init.d/fail2ban4 r/ O. b7 f! X
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗5 J  p& x: E  ?: f1 B
  1. start() {
    - |% ~; T' L3 v
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid7 c3 `( S) F* o6 P# D$ ^
  4.     if [ -z "$pid" ]; then
    # t4 B4 `0 r. }* L! V3 I5 ]
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban; s+ r- p- H: q# y$ |+ b! x
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
    0 v  w3 D, I$ H9 J5 |4 e  {
  8.     fi9 a+ [7 H! t) S9 j# I; V. C9 ?
  9.     if [ $RETVAL -eq 0 ]; then
    7 r( f4 B4 K0 \$ `7 H1 j% V
  10.         touch /var/lock/subsys/fail2ban
    2 f# u% E  x3 ~6 L
  11.         echo_success
    ( l4 e% B) v* N
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else- B& |1 I- l# Y0 i
  14.         echo_failure
    : [2 h6 t6 h9 w. @, y4 y( }; s) K( l
  15.     fi
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  16. . S. f( b7 t1 H2 q
  17.     echo' I  U; [3 C5 c! S
  18.     return $RETVAL
    + c* l- ^) i4 S: e, b9 Z
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗9 M  A. {( v2 ?7 a+ K" `
  1. stop() {8 c* Y" M: L8 {6 A8 [1 P# w
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    % E! N: A- |0 T
  3.     getpid
    * Y' b* }$ I; \* y
  4.     RETVAL=$?+ u6 l$ \( C7 X9 h
  5.     if [ -n "$pid" ]; then
    : H2 d* o4 t' t6 Z- \
  6.        /sbin/service iptables save # saves banned ip's, H' Z/ |6 X" I5 y2 F! S0 P
  7.         $FAIL2BAN stop > /dev/null4 T9 L8 j& |6 Y
  8.     sleep 1$ c1 r& c7 l% f% }4 L9 P3 o; }
  9.     getpid
    9 b, x& |- b' Y. E" _5 I! Z9 r
  10.     if [ -z "$pid" ]; then
    " D7 w/ F  o- n, A* T
  11.         rm -f /var/lock/subsys/fail2ban. U6 [  I, h0 Z% e; ^2 Y  o
  12.         echo_success7 V/ ^5 R# e! E' `
  13.     else
    . @* D& a. t; m; Z2 ]
  14.         echo_failure
    . H" L3 h7 V. N- d- w; I9 U
  15.     fi
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  16.     else1 {1 w( h# B  A8 x
  17.         echo_failure' O) d6 ]  U- Z4 Q
  18.     fi# B; i0 A& A% T" Q2 K: U
  19.     echo
    / A  u/ G& j9 n: |( s2 Y1 L; a3 d
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨  V8 @. m2 \* A% t$ n& q" Q1 Z9 `
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chkconfig --add fail2ban
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p.s
, U$ p: I% u6 M# ^隞乩 :9 Y; A; z" a! v3 S5 D
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
; q" _6 U& W8 I! M( ~8 s  b9 ehttp://www.vixual.net/blog/archives/252* h: E  C) p$ V

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