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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 * }$ f* m9 g2 o
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啣:
4 ?1 _& [( [( P/ H5 SCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗4 e. x5 ], ~; y, W6 K% n8 h- T6 K
1.肘um摰鋆fail2ban
3 K; W7 H6 g# ~; uyum -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)# J3 j( ^4 y/ M$ \6 b; [) {

. ]# F# U1 ~; h/ i5 J/ Q+ @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2 {, m& H$ j" h0 E& w1 @
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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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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗* T8 t1 z8 r, D  J4 c/ |

6 d' a0 o7 u: {, _) ?# B2 {1 ~vi /etc/yum.repos.d/CentOS-Base.repo/ a! Z9 \  g  y& O4 H( v
冽敺乩誑銝閮剖嚗
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[atrpms]/ V# _% Y5 L5 J
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms: ^! d; H$ w* t& I  ~; n
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable/ O% g1 v) G! E3 C2 W/ ?
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms  n0 R  b( n: D4 e8 l; U/ B: |: p
gpgcheck=1+ s" K. X& Y3 P9 I. t4 Q
enabled=17 h5 U9 w' ~6 f4 W

) y2 M8 `0 _5 n" T5 ~2. 閮剖fail2ban
7 `" A! j* ?, f. l銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
6 |8 I& I5 u. Y  Uvi /etc/fail2ban/fail2ban.conf
2 ]1 L6 [& A; U+ q( t靽格 logtarget :
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  1. #閮剔
    9 c( G* U. ?2 u; r9 j) _: V
  2. #logtarget = SYSLOG+ v5 L/ }5 u( h# o' d7 b
  3. #隤踵游
    ; n; f5 T; \: v" x# M6 s
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)( u1 O% _+ m8 ^, ~
  1. #閮剔
    2 Q0 q( `! a8 t: X- Y
  2. #backend = auto * R5 U$ c( g7 l& p
  3. #隤踵游
    / U: Z/ J2 M( }: u9 [7 J9 e1 Y! 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" W& o9 Y! i$ f# r" r+ A
  1. [ssh-iptables]- Y0 H0 C; A* E3 V1 j: h# E; [1 L7 _
  2. #臬血
    ' K. r& J5 o8 R: }, b
  3. enabled  = true
    " ~: q% \$ y2 \2 Z6 V! f$ {9 w5 k
  4. #瞈曉蝔梧雿輻券閮剔喳
    ! M5 S" D( ~: x: r, b
  5. filter   = sshd
    / F8 P% ^" `) E& @
  6. #iptables閮剖
    4 Q1 i2 I- a: d0 T# |
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    3 a. d$ a4 b( S- a4 `" M- ~
  8.            #潛餅撖靽∟身摰
    : g. v  M5 S8 m; v
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
    3 ~  E3 a* Z" f* L" ?+ T

  10. ' K; n  P( ^' _3 c
  11. #閬閮瑼
    ( t4 w+ \( E; r" ~' A
  12. logpath  = /var/log/secure7 |) Z; k  T( E, l8 K% F
  13. #擃閰阡航炊甈⊥/ X0 ?- G! W3 Y1 B5 T. ?
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅* ~9 N% L) j9 {8 [
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
4 h+ P  w+ t6 }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 L; y  z% _4 i憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆: i1 H9 o* |. O5 H& S
vi /etc/init.d/fail2ban; v$ |1 L# _! Y( [0 x! ]0 V0 q: p, W
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: "5 u* H; k: F0 I9 z) S
  3.     getpid
    $ o1 }) \# G+ M1 S: x* f# y6 q( ]6 G
  4.     if [ -z "$pid" ]; then- ]# P: I6 c3 r$ B
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    $ _6 c: C: c6 b
  6.         $FAIL2BAN -x start > /dev/null# y7 x' ~$ u9 G9 B
  7.         RETVAL=$?) f; G$ S$ ?6 j
  8.     fi( I1 d( u/ e) I9 I- Z
  9.     if [ $RETVAL -eq 0 ]; then9 a, D& E) Q! `6 C, r7 }
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's1 p( G: }  h2 P
  13.     else
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  14.         echo_failure" C; z1 J4 I3 T3 y
  15.     fi
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  16.   x# @8 ^7 k9 V, G9 ^$ c; x+ O
  17.     echo
    # ?% W0 ~+ F3 n" c: K
  18.     return $RETVAL& o; h+ W( n$ b4 k$ Y
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗9 c) {( _5 ^# N: l9 `; ^
  1. stop() {
    , E. \+ a& b% }/ O
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "! ?3 t: b: E$ ^
  3.     getpid
    ) s" E3 f& N% `
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then7 a8 v8 X/ T6 k3 i4 s
  6.        /sbin/service iptables save # saves banned ip's8 p4 L2 ?4 O% ^  n
  7.         $FAIL2BAN stop > /dev/null
    2 v& x! B; @. G* j+ |* e. S! b
  8.     sleep 1* q( G# d- A! ^1 n5 P
  9.     getpid
    / R. y, ~. y7 P% w
  10.     if [ -z "$pid" ]; then: k9 I1 L( G( _7 u' l& q
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success" k. j, x4 x9 o+ g2 @* j
  13.     else
    $ o8 r/ u  R7 O" X: f2 B4 Q6 Y, p
  14.         echo_failure
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  15.     fi/ i7 b# a1 T$ ^6 ^' K4 h+ l2 v# r
  16.     else
    ; j$ h' ]+ t* t% V% t4 P) N) }! ~
  17.         echo_failure5 F7 I. L, D- j0 x
  18.     fi
    ! [) P' u: z+ l
  19.     echo$ N' [5 a  ]$ D+ C
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
1 v  a$ \; b  o, z  J7 b
; e, T, }3 O6 F% D; r* i& Ichkconfig --add fail2ban; y7 z% h# P/ r$ v7 u7 j9 B
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隞乩 :+ }# R# d: X4 V3 b$ }) [& \5 |, i
http://blog.pulipuli.info/2011/07/centosfail2ban.html  ) K6 U( L% ]1 c8 ^
http://www.vixual.net/blog/archives/2522 D% O% g4 Z; d2 p6 t* |0 V3 ?

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