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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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CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗3 `; C& ]( H; Q9 K5 ?+ ]
1.肘um摰鋆fail2ban& J. M8 u* @, O, E: }
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)) r; B, _' G7 _

% a4 v3 l7 I, e! f3 z& j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# l- W- I4 e8 Y
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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
% C) C( I0 [' D0 F9 ~! ~- `* E% p
/ n/ C3 n2 o0 c9 M, o隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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2 Y) g) X  a, |1 Gvi /etc/yum.repos.d/CentOS-Base.repo. ~+ r- d# L1 n( u# G8 k
冽敺乩誑銝閮剖嚗
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) o5 J7 e" \' n4 b) p5 Z  d[atrpms]
$ [8 Y8 N% c) k- e0 vname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
* i$ C, L* x, |5 \baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
( C, @* T. ^! y0 Y  F, Hgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
7 {( h$ v* t8 Ogpgcheck=1: e3 ]1 s% f4 ^2 T8 }2 T8 E
enabled=1
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" c, C/ k( w% G- p* [" P  n# ~" q2. 閮剖fail2ban  ]: f0 U4 }; F) }" M9 }" ^
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf! k* Y  F. u! W  I' \% F% A; Y
vi /etc/fail2ban/fail2ban.conf
" |0 Y! u8 K1 f靽格 logtarget :
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  1. #閮剔
    4 i$ R% m( F2 p, l0 O" q
  2. #logtarget = SYSLOG$ C. C  W  o1 l; E% x6 ^& @
  3. #隤踵游
    4 w$ A$ S4 F2 Z, S
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)9 J* x6 l4 _8 D
  1. #閮剔; ]3 S2 n  X& t: b
  2. #backend = auto
    7 |" {$ x% ]1 i& L2 R0 E) l
  3. #隤踵游& H8 m* [  ?3 I& e
  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, s1 A+ c9 A) \
  1. [ssh-iptables]
    2 C- k# E! N% d1 _( Y
  2. #臬血
    # }: z/ S8 i- b) s  m) y
  3. enabled  = true
    1 F9 ?9 @5 b8 q$ R
  4. #瞈曉蝔梧雿輻券閮剔喳4 D1 ?) h2 j, `. J6 v( e
  5. filter   = sshd
    7 [. T) A5 y4 o) [% S  @
  6. #iptables閮剖, q" N( A& G9 T+ y' F
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    ; c$ _4 I& o! {8 d
  8.            #潛餅撖靽∟身摰
    5 C5 C0 Y) k, z# `5 R' S- z
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]; b1 Y; E% Q+ o3 p

  10. ( D2 y* V# @3 D7 g
  11. #閬閮瑼7 A# J& V  L2 k% y- w
  12. logpath  = /var/log/secure
    % `' e: N4 B+ v. X. e" I% j$ A
  13. #擃閰阡航炊甈⊥
    ! \3 {$ G% m* w' e% r) D" R
  14. maxretry = 2
    + f4 E7 P5 N0 d$ f
  15. #餅嚗-1銵函內瘞訾餅  E- S) M3 B, Y1 k
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
" t% e  l& c& ?1 I6 H( @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
8 n$ Y$ d# [9 z憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
) z$ D. @% e, F2 k' r vi /etc/init.d/fail2ban
! I* E. U9 a) l& ?曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
% n5 ^5 ^  B, \' K* k' X, @. e
  1. start() {( _8 `8 y' A! w
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
    4 j: C2 ]$ r, f5 V2 |/ K7 A& S
  3.     getpid  R- r$ L- S, |& q  P+ b  |2 W
  4.     if [ -z "$pid" ]; then9 }% I; l4 u2 O- V. t$ D7 M
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban7 g9 e6 f, v/ y( ?+ z
  6.         $FAIL2BAN -x start > /dev/null( H* z; G% y3 ^' N" G, L7 |9 D- L
  7.         RETVAL=$?
    6 C* i0 R" t- O8 u
  8.     fi
    $ V$ ^3 F" K  w1 X0 X2 m% V
  9.     if [ $RETVAL -eq 0 ]; then
      k- c! q1 z  K5 S
  10.         touch /var/lock/subsys/fail2ban9 m" E5 X  P) ^3 \! Y* _
  11.         echo_success) A) X' o. X4 N/ b! v
  12.         /sbin/service iptables restart # reloads previously banned ip's& h! j/ d$ z& |9 l) }- C# E7 F
  13.     else
    2 Z- d( M# K( B5 L5 Z$ r0 k8 k: s4 q
  14.         echo_failure
    5 k" n  w' _1 v
  15.     fi
    5 ]+ ?9 ~* o2 Y1 E: q% L
  16. 8 g7 a9 P4 t. r4 j$ y8 {9 E' O+ T0 R
  17.     echo
    ' G! @3 _- k& L
  18.     return $RETVAL7 v) w+ r2 H5 x! b
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
! |/ z8 b1 j" ]  H  r4 [
  1. stop() {$ w5 [0 |1 _: ]2 w' H
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "3 a& ~" _+ c( {0 ?! ~
  3.     getpid
    3 s; S9 Z3 C4 @( d
  4.     RETVAL=$?
    1 M# d4 I8 c" P
  5.     if [ -n "$pid" ]; then
    . l( q$ x7 H- ~* F: h; c
  6.        /sbin/service iptables save # saves banned ip's5 b0 B3 w+ ]8 u" q
  7.         $FAIL2BAN stop > /dev/null  g( G2 C% Q) @6 f
  8.     sleep 1. D4 t6 u) W' G, Y! n
  9.     getpid7 X5 O; j, A: V* U! E
  10.     if [ -z "$pid" ]; then
    2 i7 ~$ I  C: w/ G5 G, `1 e8 L5 k! `
  11.         rm -f /var/lock/subsys/fail2ban
    0 i  M" s  X" }! j0 s' J5 x" B
  12.         echo_success5 R: i* N8 v* g+ g& B6 ]$ g
  13.     else
    ' t0 S% I4 d: Z0 U% `0 O. K
  14.         echo_failure8 w8 o  m$ q3 z. n0 H# z
  15.     fi- Z7 a! U3 W7 ?, I: w: M2 y# R
  16.     else/ |* E% M* }' f$ w) K) @
  17.         echo_failure
    4 l1 R3 i9 D6 {  q9 K' {; J7 n
  18.     fi/ G' M, E3 K" n7 e" C3 ?
  19.     echo' v# X* _  i7 L7 F0 \( T
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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% D& [& J) ^. _9 W. l4 Bchkconfig --add fail2ban
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$ g8 b; T* B1 L1 }$ [p.s # ]& I0 M" N5 G% H! I0 n! \
隞乩 :$ N$ e! t( g' F' [5 Z5 c6 ~
http://blog.pulipuli.info/2011/07/centosfail2ban.html  5 ~: G; d" Z: M( X0 n' B
http://www.vixual.net/blog/archives/252. P& P2 C5 |  e; U

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