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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 8 d+ |6 d; |) v3 ~7 r' \7 @

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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
( U% F8 n$ A3 i' q; w+ _7 X1.肘um摰鋆fail2ban: w% m$ n" Q" u7 N
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)5 Y8 [- O$ p" Y+ v. R
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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4 f/ O5 }; _5 K$ t; V8 A3 s
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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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" R9 F& q" R, {4 T隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗0 F9 X$ U3 B+ j- M; d+ i) T
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vi /etc/yum.repos.d/CentOS-Base.repo
7 I( _9 I: \) K! s7 i8 e) Z9 f冽敺乩誑銝閮剖嚗
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[atrpms]
& X! o# l4 |4 Z8 Y1 l1 a8 Jname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms+ M" v' g/ N# ?7 O1 a. B
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
% d/ W. X2 Q& b1 [% \gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms, s0 E. i7 S7 m& K. j
gpgcheck=1
* g* x  F) y  {enabled=1" H; l7 j$ H- X4 P* Q! }' S: K, {
; ^) ^. ?; D' W4 I% @
2. 閮剖fail2ban
8 x5 D% v% L/ P銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf, A: v8 y# G6 c/ M
vi /etc/fail2ban/fail2ban.conf
1 u' m/ n  u  `- h靽格 logtarget :
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  1. #閮剔* u2 a% z$ T8 Z5 s
  2. #logtarget = SYSLOG4 {5 n0 T0 C2 k  u
  3. #隤踵游
    1 o7 \0 I( G8 o3 ~$ d+ f/ l' j3 [
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)" `, y4 A- ?, K; O% {6 V- ?
  1. #閮剔$ a. k- @5 _% @+ l' p5 z; C" J
  2. #backend = auto 6 u  E7 V8 @  G) @
  3. #隤踵游- F" @8 k1 S1 O+ q7 k6 s
  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, F0 G0 }  B- n7 F( g/ w1 x+ \# ?
  1. [ssh-iptables]  U( }9 \' a$ `, m  o
  2. #臬血% B8 o( v% e9 e7 X+ r
  3. enabled  = true
    ) ~3 V! Y9 M9 K' }
  4. #瞈曉蝔梧雿輻券閮剔喳
    2 T  {" \" C& Z5 L
  5. filter   = sshd. H7 D* B3 ^. z( V/ I, _" H& F. W( n
  6. #iptables閮剖
    . D; O+ X( f, J$ K
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]8 k$ {# `0 M% F; q$ R
  8.            #潛餅撖靽∟身摰9 X7 C& n& J8 ^9 Z; x! E
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. 9 T1 ?2 K, R" l3 n
  11. #閬閮瑼; U" \, z4 W* p% ~4 }1 Q
  12. logpath  = /var/log/secure- h% J9 ?9 D1 p# Q
  13. #擃閰阡航炊甈⊥0 y: G6 O8 \% \* j3 p: d- ]
  14. maxretry = 2! U* [& f! p9 D" \
  15. #餅嚗-1銵函內瘞訾餅* a- j4 l7 D/ J$ H& x
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
) F) C& L" D8 n/ A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
0 M7 V9 ]/ B' r" B* B! p憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
) u% Q+ d( T5 z& q vi /etc/init.d/fail2ban
5 A6 ^# w  f7 s" o/ n# R$ @/ h曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗; n7 m, ~9 {: w/ M% l# q& c
  1. start() {- T! m( N$ Z- ]4 `* z# o
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid. A, f, b/ y( Z5 l, F
  4.     if [ -z "$pid" ]; then- O" c/ }) ]% M/ d/ i0 f
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban, ^0 p' J  E+ D+ a1 V. h8 I
  6.         $FAIL2BAN -x start > /dev/null9 Y: ]& `( Q, a
  7.         RETVAL=$?7 L6 K! G9 n; X+ ?# n2 T5 A! x$ H0 S4 u
  8.     fi$ Q& M2 @9 r2 K/ L& x% h
  9.     if [ $RETVAL -eq 0 ]; then
    - _: O6 H, H7 ~5 `4 \
  10.         touch /var/lock/subsys/fail2ban' ~9 S& H6 I( W! A' O
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's1 [- c' U- Y/ Y
  13.     else
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  14.         echo_failure1 K, Q( k! b* h  U
  15.     fi! `  v" V7 Y% z
  16. $ f3 t, r0 E; Z, T8 }6 X" \9 R
  17.     echo
    , ?1 u/ X+ p- H
  18.     return $RETVAL! }& _- V9 n: O% H  D
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗( o9 p! \. `4 j# ^" d# B
  1. stop() {. k8 I0 |0 L( O% g3 t. d
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid: M$ R- C0 s8 H7 X
  4.     RETVAL=$?8 `# ^/ D7 ^7 v7 s8 G2 P9 o
  5.     if [ -n "$pid" ]; then
    % i* [9 @& Q5 D8 v6 `
  6.        /sbin/service iptables save # saves banned ip's* o# H, q$ m5 U2 e7 z! Q/ ~4 h5 K
  7.         $FAIL2BAN stop > /dev/null
    % T/ ]; O6 t( c3 f6 L- e
  8.     sleep 1
    2 }) W# Y, Y9 V) ~. U/ C( R# S- }
  9.     getpid
    ; C$ V2 v+ f: P) w
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success0 `( O7 `: \! [& Q9 ?5 p3 ~" U( x" M
  13.     else
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  14.         echo_failure) R3 N' {# F/ g6 i3 h) I
  15.     fi7 c4 P2 w5 S4 T  j. ~2 x
  16.     else
    1 ?/ R4 {$ F: z8 B
  17.         echo_failure
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  18.     fi
    & R$ m. }; Y" F( B6 e. p
  19.     echo
    . O- F2 Z& O! i8 ]6 [% h9 f
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨# V3 t! n3 j5 l. A! [

) f# M1 {# C6 I- c. hchkconfig --add fail2ban
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p.s ) T2 p& ?* I  R  Z) y
隞乩 :
- S( V5 S7 Z3 t5 I8 K  z- z0 ghttp://blog.pulipuli.info/2011/07/centosfail2ban.html  ) I1 O, A/ g- I; \
http://www.vixual.net/blog/archives/252  C3 [7 W  Y8 p1 H( J$ R9 c

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