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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; @0 F6 W4 K. m2 Q* w! i6 a3 |. s
1.肘um摰鋆fail2ban5 O! w+ Y. ^' v4 |8 m
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)
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. y8 O  \# w- [; \+ ]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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$ |7 ~% z9 D! l) Q5 A' ?隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗/ y: g2 k% S# G; Q2 r, f

. K' n% U- @% K4 r+ d& Dvi /etc/yum.repos.d/CentOS-Base.repo7 t+ a4 y& [) _! X! z" p
冽敺乩誑銝閮剖嚗
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[atrpms]( T; N! T. a& a& {# _
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms# M4 j' i3 V$ `: ^% O& ?/ A" R
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable; ]+ X# S- w6 @; s+ O
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms( q% }) d0 Z- \+ N1 T* ?
gpgcheck=1$ R- S" D! H, x5 }6 C4 X
enabled=1
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' l2 Z  ~  J9 z7 U( e2. 閮剖fail2ban7 z4 c$ L. I4 z
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
2 o$ d+ l% t% h: k. Mvi /etc/fail2ban/fail2ban.conf
- J# ^3 H4 J8 v- h$ q, c0 v靽格 logtarget :- X1 s0 D  d& ]8 D
  1. #閮剔( P6 A/ P6 Y+ w2 f
  2. #logtarget = SYSLOG. y+ b) e# t# g& V
  3. #隤踵游3 S- I1 {# R4 M/ @0 j5 l
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)& k+ Y+ a  v& B4 P
  1. #閮剔
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  2. #backend = auto
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  3. #隤踵游! h8 v: f: g0 X: [- [) a, M
  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]
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  2. #臬血; S) U+ \  _; U0 e5 E/ P4 C" F
  3. enabled  = true  k2 g2 C4 m' L4 J- r5 D4 n2 f7 g
  4. #瞈曉蝔梧雿輻券閮剔喳8 a' I) Z! i& q  J
  5. filter   = sshd8 S! w, r4 Z$ T! u6 ]! O. O
  6. #iptables閮剖
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  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]]
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  10. 2 R- V( X- Q5 P* C6 O+ v
  11. #閬閮瑼/ q$ |  M8 A* v9 g% n
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2- v" a3 X* W5 [: Z; D. |
  15. #餅嚗-1銵函內瘞訾餅; _5 F5 F5 R. r; J. u4 a
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬5 @$ C" _. P% K
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' X% t9 V  O2 y5 g
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆: C. p) n! x$ c. C9 a+ o3 y
vi /etc/init.d/fail2ban4 Y0 A" \' l( x% y9 m/ V
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: "- v" j8 S% S: ^+ V" I) e
  3.     getpid
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  4.     if [ -z "$pid" ]; then: F" h5 {% n9 k: Y4 ]
  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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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban# P4 i# I  `2 U1 _! S8 P1 i0 w
  11.         echo_success/ Q* V! ~7 b' w  e& T
  12.         /sbin/service iptables restart # reloads previously banned ip's* }& r  ~* j9 K( _3 ]2 K
  13.     else
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  14.         echo_failure
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  15.     fi# [! O* m' |1 X& j! B4 r  e
  16. : ^/ z$ z* v' U) M0 g' }
  17.     echo
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  18.     return $RETVAL7 I9 B2 S7 V! Q: Q1 P
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {' q. c6 m2 p/ d9 c4 S" i+ X
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid* A7 T; h# N4 F" k
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then* ]' m- x5 k* t' C) C
  6.        /sbin/service iptables save # saves banned ip's4 a* p& _1 ^7 }
  7.         $FAIL2BAN stop > /dev/null2 _: w6 Y1 J' X* ]$ X5 m' \
  8.     sleep 1
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  9.     getpid
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  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban, Y" w8 z4 W4 I7 r9 F( ?9 S2 }
  12.         echo_success
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  13.     else0 \7 _- y9 N$ ?' \  B% W! p
  14.         echo_failure8 x5 Q# B/ q7 i: K
  15.     fi
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  16.     else
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  17.         echo_failure
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  18.     fi
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  19.     echo; t4 w& `: t( T
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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1 @1 E% W6 u6 Q% cchkconfig --add fail2ban
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隞乩 :8 u& v( p, w/ c2 t! t0 i8 U5 [% Z
http://blog.pulipuli.info/2011/07/centosfail2ban.html  ; f$ T3 V) O/ w& o2 M
http://www.vixual.net/blog/archives/252
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