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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 ! x9 z- Z( u" k, C9 e- y
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啣:
- Z% l1 b1 s! P9 JCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗. k3 D+ h4 w: b
1.肘um摰鋆fail2ban! ~$ Q- s% s* y, |. T3 V8 j7 i
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)1 z: \* [+ a9 M; D8 t: V
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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
% y' o6 L. U5 l- h, A$ C. v3 W( z. O  U/ X0 r* \* P! ?9 p$ ?
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, ?+ z1 ]. o: S8 j

1 U! s+ u" b2 b! u- E" M* C0 m隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗5 g. Y4 b8 y/ B& k- V1 x; T; A

' C7 k7 r/ `( L# b1 x) F# Qvi /etc/yum.repos.d/CentOS-Base.repo$ ]5 W8 g  R+ N( I; k: x' }1 Q
冽敺乩誑銝閮剖嚗2 q: P9 l& x3 p4 t% C, O% l9 _
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[atrpms]
8 L7 R, |, `. A( d, ?$ Cname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
8 b* b% \& p  f' K, H( rbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
6 \6 ?5 }) Y( b1 X2 Dgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
% ~$ M  `; P) {; Ugpgcheck=1
  s! ~; |1 u' r" l. z% C" m6 `enabled=1' Z# R4 f8 j( u( u
' j5 Q2 B5 [7 i: o' }5 M
2. 閮剖fail2ban2 a0 |* h& w: L% C( ^* c
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf" h' o  d# q. W- ?: `9 g2 U/ `: f
vi /etc/fail2ban/fail2ban.conf, ^! q) e3 B8 q
靽格 logtarget :
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  1. #閮剔0 R% i; C  Z3 m5 d& t. V8 s
  2. #logtarget = SYSLOG$ x* S6 q# j" T5 h7 R
  3. #隤踵游$ i% ^( e. o9 S( ~+ j
  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
    + W7 t3 w; J  R& A% T+ x8 t
  2. #backend = auto
    % G5 |& b( M+ |) Y- N2 \. \& ^/ J
  3. #隤踵游
    , L$ W0 m. a3 `) p% 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
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  1. [ssh-iptables]! s5 V( `! H' X) p% z7 W
  2. #臬血( t5 I/ q. m- \4 i/ Q2 A' l: j8 v
  3. enabled  = true1 |: |! L1 K" @/ C! ]6 V; `
  4. #瞈曉蝔梧雿輻券閮剔喳
    4 ]" H. Q  n; N! O" @& X
  5. filter   = sshd
    6 u: S& D$ C/ G- q# O  S  t
  6. #iptables閮剖
    1 Q4 x' G2 l/ o" r3 W, o
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]; {, [' z; K* K. t- o* B
  8.            #潛餅撖靽∟身摰
    * D* J# h+ z! ?5 u
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]$ i  ]2 R9 _0 q% y& Y; D

  10. & v1 H5 _8 t* x5 m# [' J
  11. #閬閮瑼# M# O* C3 r% Y6 a
  12. logpath  = /var/log/secure3 j  A7 {5 \& `4 ]/ L
  13. #擃閰阡航炊甈⊥
    * p9 R$ ^$ C' i# t* c& v) R
  14. maxretry = 2
    $ e' Q, f$ B/ [2 \
  15. #餅嚗-1銵函內瘞訾餅
    ! h0 P+ I5 {, ~1 w8 ]
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
3 J8 r) s8 \# h' p2 v- K4 X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
) Y2 S2 R% P5 I' H7 c憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
- x) Z# F3 I5 A2 A9 u/ I+ |. Q vi /etc/init.d/fail2ban2 `& a4 [5 \7 S9 h
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
# L' M, ^7 i+ T5 C# ]& e
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid
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  4.     if [ -z "$pid" ]; then
    # W* T% F6 h! m$ L* o) m5 v
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    ' ^  A1 V: S8 o! ^% E& C
  6.         $FAIL2BAN -x start > /dev/null
    6 s  J, \. ]; t, L5 ?% `
  7.         RETVAL=$?
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  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then$ K6 S- x6 x9 |
  10.         touch /var/lock/subsys/fail2ban
    % f- s/ ]: p) I  T
  11.         echo_success
    6 H! d8 m* @+ c2 \9 j
  12.         /sbin/service iptables restart # reloads previously banned ip's1 n% M3 S* T8 z4 i$ G6 Z( m
  13.     else
    7 L$ `8 C/ A' s1 h: ^/ Y
  14.         echo_failure6 D5 J4 Q9 ?  J8 f
  15.     fi) y3 g; Z' W0 E9 y: k: b

  16. $ M. V) q! q- L6 }0 T5 C2 n
  17.     echo
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  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
# l* \# L) ^/ U$ D
  1. stop() {
    1 }  Y6 i! W, K$ _( h
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "& c) m8 t3 U( t+ c4 L' n$ ?3 u* R& [
  3.     getpid
    : L5 X0 }; C' w- D& W! [
  4.     RETVAL=$?% E/ [% x5 n! F+ ^* X
  5.     if [ -n "$pid" ]; then
    8 |9 `! |. I: o/ P
  6.        /sbin/service iptables save # saves banned ip's+ c4 k9 p+ A. `, V
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1# r* ~( j( ?1 V( n+ q0 L
  9.     getpid% }  h/ `  l7 C
  10.     if [ -z "$pid" ]; then
    ( {8 d# a" e9 V) J- m5 Q
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success* t3 u( u% k1 T7 K' z3 n
  13.     else% \8 p$ [4 K8 O1 k. D0 W/ j0 [2 J1 ~
  14.         echo_failure
    / |$ w4 x* \" V. ^; K
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  16.     else
    # U3 a; F1 \" y$ m- x- ]$ A9 _
  17.         echo_failure
    6 u7 [$ D6 L- k, |7 h! `
  18.     fi/ S$ B; l% r6 G: v0 k! [
  19.     echo2 ^3 b: P1 F) L; Y# m) K
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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; s2 j% v3 U7 N9 S8 cchkconfig --add fail2ban1 m5 J& u# x# ?! ]

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, t1 }; [. M' r8 R! C隞乩 :
) ^( F. }4 D6 m3 Yhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  " G. {! d. B% [
http://www.vixual.net/blog/archives/252
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