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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
# r& y( D  z2 Y' s" ^1.肘um摰鋆fail2ban+ e: }4 H( W4 d6 }+ {. e! c: Z6 ?) x
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)8 r- a6 M8 }5 b1 }
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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
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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
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+ O# w9 g$ [8 g' n" ~* a1 hvi /etc/yum.repos.d/CentOS-Base.repo8 `" ~% y; Z$ v
冽敺乩誑銝閮剖嚗
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[atrpms]
; a# Q3 C" h2 }5 D; pname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms8 A1 X2 j' x+ \" i- b; Z; F
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
3 c# ~* k: a7 [- pgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
3 [' C/ \$ ~, U  v8 n1 Kgpgcheck=1
( |: c9 L( T* x, {enabled=1
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2. 閮剖fail2ban# B" K% r; F6 `+ M9 j
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
  M2 J3 A7 x" Nvi /etc/fail2ban/fail2ban.conf
( L" Y6 ~. g+ r) T# d$ \' j" g靽格 logtarget :  A# M9 @; m7 Q- l4 {( F
  1. #閮剔
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  2. #logtarget = SYSLOG5 C" h# K  U0 |8 p% a
  3. #隤踵游
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  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)+ z3 J( ]: M# t  w5 t2 W
  1. #閮剔
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  2. #backend = auto
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  3. #隤踵游6 h; P7 r* M% Y+ U) `2 \1 K1 G
  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$ A2 \' I$ F6 O; g: s
  1. [ssh-iptables]; G% x1 H% f) r
  2. #臬血7 f6 b# n" y- `8 e7 e
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd2 V6 U9 M$ L" H
  6. #iptables閮剖! }: n% c+ l0 E( @$ t
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
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  9.            sendmail-whois[name=SSH, [email protected], [email protected]]! q" h; |  u2 |

  10. ' O0 s" R8 L  x% Y0 V" @
  11. #閬閮瑼/ T4 }! H2 I+ f0 d2 i5 R
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥* a, {; \2 |* a
  14. maxretry = 2( i  a7 n- L: z, y
  15. #餅嚗-1銵函內瘞訾餅
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  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
# ^* u- M+ }6 P3 y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! n; l; p3 P4 B4 {+ F( Y
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆7 D* r& |. _- c/ g& ?0 Z* ~) U
vi /etc/init.d/fail2ban
. L: A- F" @0 P$ b2 T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 G3 W" U  v# s6 Z8 e* e
  3.     getpid
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  4.     if [ -z "$pid" ]; then
    # ~; ?0 N! [1 \5 x
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi' _% E( d. E( G; D
  9.     if [ $RETVAL -eq 0 ]; then, J$ V6 ?* m, F& l- d
  10.         touch /var/lock/subsys/fail2ban/ L  K+ }5 G; g7 x, R( m4 B7 n2 o
  11.         echo_success5 _, [1 V1 b( ^4 Z, L
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else* B+ n4 i8 b# E' l# i
  14.         echo_failure% P! {0 c+ K" r% e
  15.     fi
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  16. 9 U5 c. N% R' G2 H4 q# s
  17.     echo. F: a- W  W( s# _7 m0 P
  18.     return $RETVAL
    # d# `: q+ J: k% M; e, L6 f
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗! L" x* m  W7 |1 J9 c& q
  1. stop() {; E+ _- I6 j& v6 K
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid' ]8 p" X, U9 a
  4.     RETVAL=$?- {  C6 V; f$ |! y; V+ L
  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
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  9.     getpid# u' d3 c9 O5 F% G/ K
  10.     if [ -z "$pid" ]; then) e9 `) `- Y# T# S2 D6 V0 j
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else
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  14.         echo_failure
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  15.     fi4 i; O8 ~' J- W( m/ P1 O2 f
  16.     else4 l! p0 h- U  ~/ i0 n/ ~
  17.         echo_failure8 L, J3 A0 ]- S: G% q- o$ N
  18.     fi
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  19.     echo
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  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
  G4 \$ ]# r' W. s
' h& T! k4 X9 ]  b: f' Fchkconfig --add fail2ban  c5 M# x! t9 Y  U, n$ J

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隞乩 :! t# f, {4 Z9 _& U
http://blog.pulipuli.info/2011/07/centosfail2ban.html  . K4 V" ]+ z5 ]9 n0 i
http://www.vixual.net/blog/archives/252
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