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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 ) j( x1 l2 l+ B9 m2 C4 ~( o
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啣:
4 Q# D, e1 u. Q5 n9 E) DCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
- {% a2 Y# i2 b: W; J/ \6 S1.肘um摰鋆fail2ban
0 f* s  Z$ j+ [; Nyum -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; o  G6 P& ~# T) t3 J* `

: a  _  i8 c4 D$ `! u& C. T7 Iyum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' K; z  ]1 w) b  F  N
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗- |7 n+ F0 M' v; U; ?9 a

( G. [* l/ S9 `3 ~9 Y- i# U! W" Kvi /etc/yum.repos.d/CentOS-Base.repo
8 X$ K8 c) p5 t$ S8 d冽敺乩誑銝閮剖嚗
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[atrpms]
, Q  p# i# |4 f" W, g4 T. jname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
; H& p  E( J. {baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
* g, K1 Z+ f, m( D+ O& J0 R6 o5 Zgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms* u2 w" i- Z8 s1 z: S
gpgcheck=11 N& E( O2 |3 I7 R' M, s% c2 \1 m
enabled=1! K8 w+ T3 {5 \% P6 h
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2. 閮剖fail2ban
- Q2 L! D1 g3 [/ P' t6 E+ i銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf& z9 _' C, }2 k, p
vi /etc/fail2ban/fail2ban.conf; l+ G' w# R  J0 }6 n' V% j* t
靽格 logtarget :" }' S8 s3 a; K8 Y6 t: D
  1. #閮剔
    * ^  z5 J9 q4 n5 d
  2. #logtarget = SYSLOG
    : g) R5 M  N% ~/ X/ [
  3. #隤踵游& y9 F9 {' h& B6 |
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔7 k) e& V9 a* y4 c: }- L  A7 o( r
  2. #backend = auto 0 h& H  w0 u  Q& h0 A5 {8 s) F
  3. #隤踵游4 }0 `5 b: e6 O# Q7 `
  4. backend = gamin
銴鋆賭誨蝣
gamin烊inux憟隞嗡銝憒蝻箏雿臭誑肘um靘摰鋆摰
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  1. [ssh-iptables]
    0 J# |8 ^6 D4 o5 R; T9 _
  2. #臬血
    * V7 D, V" n4 c5 @  j9 h
  3. enabled  = true6 U/ g8 s, A9 R1 k% j6 j
  4. #瞈曉蝔梧雿輻券閮剔喳
    % T+ h9 B& H: m: Q% c( @* ?8 B
  5. filter   = sshd7 j; e5 a5 v1 n# O4 m1 g% v
  6. #iptables閮剖# x+ a" [& E8 b9 \9 x( R
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]4 r0 w8 z7 P# s- d
  8.            #潛餅撖靽∟身摰) t- h7 c7 e* b: }  e5 u6 p
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
    3 y; v- [; K& S: l( v: M6 ^
  10.   w* W3 U& B: O8 f+ ~. @4 Y
  11. #閬閮瑼
    / }% e! k. T$ Q0 \
  12. logpath  = /var/log/secure
    5 V4 i, i+ |1 H* j& p
  13. #擃閰阡航炊甈⊥
    9 o# g& w* c- I! a9 w
  14. maxretry = 2/ v) z3 \" C$ S
  15. #餅嚗-1銵函內瘞訾餅  l! w4 c- {- _( D% a
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
8 V  f5 {0 D, M$ J' ]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* F9 S9 Y; d- h" `6 ~' ^0 n
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
8 M8 K( p* V  K vi /etc/init.d/fail2ban% r6 w8 s/ v% v' p$ {7 U' a
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗: X+ y$ A! |+ Z/ Q  I1 A, A
  1. start() {
    7 @, W/ \3 Q4 L5 k* P8 n7 `8 w
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "6 c  S: w& c7 i& w- q
  3.     getpid
    & n5 D4 a7 q/ y+ g5 E
  4.     if [ -z "$pid" ]; then7 \0 x% T% K% ~9 m6 g
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban& }- Y3 E) W2 x1 S! a
  6.         $FAIL2BAN -x start > /dev/null, a- i6 T1 n' O" D; f
  7.         RETVAL=$?) ]* E# `( A6 e  E/ n
  8.     fi
    $ H2 u; I  C$ ^* l% [
  9.     if [ $RETVAL -eq 0 ]; then
    , ~) h7 e7 G6 G0 n* D& V
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success6 w; P! f. E  i& _( h# [
  12.         /sbin/service iptables restart # reloads previously banned ip's
    2 U& k3 J& {! I, Q5 o- ^7 V
  13.     else
    8 q. J& j' d! a3 J  a0 m. J
  14.         echo_failure
    # g3 C* |0 z1 p% b5 [( U8 I
  15.     fi
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  16. / X/ w) D9 O. ]$ e0 n+ s
  17.     echo
    + ~+ I7 y6 z3 V9 O* Z) ~" _$ D/ @$ h
  18.     return $RETVAL# q  @, p; `5 r5 [
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗9 H) v3 _! v% c3 i* C) M4 N# @
  1. stop() {
    6 |2 c, z) ~3 o* z
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    8 p3 G- [! M$ P
  3.     getpid2 I. V2 P  m' U5 e/ j% m7 F+ I' I
  4.     RETVAL=$?
    , Z& @8 K( C* P& i- R+ d
  5.     if [ -n "$pid" ]; then+ e) P- m/ U5 D% d. ~% y/ {
  6.        /sbin/service iptables save # saves banned ip's
      g3 J* J0 ^0 c/ Q( B
  7.         $FAIL2BAN stop > /dev/null9 u: K! Q& V# s: n/ D: |. _
  8.     sleep 1* F5 i! M/ z: I9 f" k. V# C
  9.     getpid
    . f" f7 }- j+ I
  10.     if [ -z "$pid" ]; then
      C# A. I: b1 Y
  11.         rm -f /var/lock/subsys/fail2ban' a4 E' e  I, P" c, t3 O
  12.         echo_success6 Z% j! O7 K9 ^, t1 A
  13.     else% Q/ \& p7 A* v" _) A
  14.         echo_failure
    : [7 K1 [; i" Y
  15.     fi% O7 c6 V" [0 I( a5 }
  16.     else2 L% ~4 @4 I) i3 N" m
  17.         echo_failure1 i$ J) |6 W) s
  18.     fi
    . q# F; L; G1 \
  19.     echo1 M7 p4 ?5 P0 _( J/ z4 U" D3 k
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨5 C+ w* C( U% n0 d9 |

, c6 V: F! ~3 z' ^chkconfig --add fail2ban; P! W% z( W  u5 R. u" w
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隞乩 :
$ D$ n6 Q8 c7 I$ J1 |6 T& Q' M2 Jhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  ! t) l7 C. I4 H- E
http://www.vixual.net/blog/archives/252) P4 [# @1 T$ V$ C/ C

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