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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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啣:
8 |. _3 ?9 d; E! qCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
1 ~; I& D" J+ e1.肘um摰鋆fail2ban
* H, q. g- R$ I. R5 Q" x; Jyum -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)( m) N/ w( O. H' g
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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- C) N& ?% l" k8 G( q9 s% W2 r1 N
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗4 I6 U' G3 R: W# S) }: F

6 l! b; I" ?2 j& w* Pvi /etc/yum.repos.d/CentOS-Base.repo
' _& E/ _9 M1 d$ k( F. ^# z# U& j冽敺乩誑銝閮剖嚗1 u' V8 A4 Z7 h2 X, ~
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[atrpms]( _7 C4 L$ B) H3 a# r$ E
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms* t! e: r+ U% C4 K2 a
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
4 U6 P+ z! {- Ygpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms  V1 e$ b& N. K/ x
gpgcheck=1$ b" k7 N/ b- I# g9 }3 p
enabled=1( N& u) z( A, x
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2. 閮剖fail2ban9 r+ \7 H. G, n
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf5 [0 d1 {; T) h) r
vi /etc/fail2ban/fail2ban.conf
9 t) Y! j4 E8 c: T靽格 logtarget :
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  1. #閮剔. I( J) X2 I4 k- M* Q
  2. #logtarget = SYSLOG  V8 k, L& {) v" _) X
  3. #隤踵游
    6 V+ J+ b1 e% x: [9 e
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)+ @  P; p% m% C% X
  1. #閮剔+ M, m) `8 o/ K; ]) d4 V
  2. #backend = auto
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  3. #隤踵游
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  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
    5 w' w" \$ k4 M4 x8 O; w
  3. enabled  = true" H% ]# ]" n: S* ~. k) Y
  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd: h& I. }4 z) Q0 _9 F% C9 G
  6. #iptables閮剖) q' N4 t! |! C+ W
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]- d+ m2 }' `" A2 P
  8.            #潛餅撖靽∟身摰1 B' J$ q& u, D* v; s' J
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. # j  z( o2 D4 a7 Y. `
  11. #閬閮瑼8 V, e0 J( ~$ ]+ f- w9 d
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥  s! D: w9 i: m5 i) A
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅) H3 b+ g/ R$ G3 h3 T
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬, E0 Z$ b: d* c6 ~' y$ p
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! u2 s3 f5 U: v6 J$ w- b% b
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆- y' M% E- u  r) c; n
vi /etc/init.d/fail2ban
1 [" g7 x' y$ h曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗4 M" f; B, H3 [* H
  1. start() {3 h5 h9 E2 _$ O9 f1 i
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid; |; b# d1 H# J, Q4 o, G% H
  4.     if [ -z "$pid" ]; then) l. I0 _! `. X4 W0 |9 e6 j. K, s
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban# U( C" k( b: R9 L& V  d2 H
  6.         $FAIL2BAN -x start > /dev/null+ f" R, _' p. O4 R3 z
  7.         RETVAL=$?
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  8.     fi8 R7 q* a2 H8 m
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success" Q0 a0 E5 h. S0 f: ^# ~
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
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  14.         echo_failure
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  15.     fi
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  16. 5 |1 b1 H; m; \* E: _
  17.     echo. \# s( \/ W" L* @, S
  18.     return $RETVAL
    # E$ M8 S9 c* z; x: f$ B5 R
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗2 o1 ]  H4 n* g. Z; ~3 o
  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    + Q+ A- N/ W  ^
  3.     getpid
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  4.     RETVAL=$?5 ^4 q& F7 M5 k1 {* h( }  k
  5.     if [ -n "$pid" ]; then3 Q  _5 |# A  z" \) j
  6.        /sbin/service iptables save # saves banned ip's  r) a1 l) q/ x$ c2 N, |" L' _, z
  7.         $FAIL2BAN stop > /dev/null& l  F  u8 S! M6 P
  8.     sleep 13 Q: d: v3 v# P4 J
  9.     getpid' c7 g7 }! ~& }3 s1 q3 E
  10.     if [ -z "$pid" ]; then4 p2 G; M8 d( d5 d/ S6 a$ `
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success% ^2 {7 a1 m' D
  13.     else. D( u, t5 _4 V
  14.         echo_failure
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  15.     fi
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  16.     else6 a7 I2 {& @: A( G) C$ }
  17.         echo_failure
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  18.     fi
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  19.     echo/ A! k9 F. Q9 r0 ~0 T& \) r
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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7 E4 A3 M. J( C7 u# Z5 R  g8 S+ {chkconfig --add fail2ban
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  t7 M  e0 H/ {& ]! ?隞乩 :3 w7 X/ {5 g* {5 a* Q
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
6 {3 j# n0 h2 N" k8 w. {) q% I5 Rhttp://www.vixual.net/blog/archives/252, }: z0 N5 Q" @6 r4 `* K( T8 y

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