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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
6 P, |7 y' ^: {$ g1.肘um摰鋆fail2ban" @8 r; G7 [0 P) l. 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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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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! u6 t7 y) Q. h! a- S4 G+ x: d隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo  A. t9 h, T# f  b* l0 {, C
冽敺乩誑銝閮剖嚗2 d3 }4 R4 d# F- D* S0 Q: l- w
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[atrpms]5 u( t; s1 z* S$ a: V& ~: g! X
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
: v( u$ A+ n8 m0 p0 W) E# P4 Fbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
7 B5 i( Q5 n* K2 M+ O1 ]" \8 `gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms. t  L' m3 t  ~7 f" Z+ A/ \8 y
gpgcheck=1
8 N9 ^- ~7 W: {: n$ a" l2 Yenabled=12 k1 V6 D' w/ l) O+ n
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2. 閮剖fail2ban
' @, ~' i3 r' D7 m7 J0 U" R- H銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
( T; @: P% g; I9 ?) B/ ^9 wvi /etc/fail2ban/fail2ban.conf5 }! ]! O3 r; s+ |/ A
靽格 logtarget :
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  1. #閮剔
    6 S( d; u/ \! Q% g* \! C; b
  2. #logtarget = SYSLOG
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  3. #隤踵游7 \9 N3 n4 `9 F
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)9 j/ y' F" Q) Q) e3 I1 [/ x
  1. #閮剔& p" C/ w* }8 k5 k, O% O( Q$ d' M
  2. #backend = auto
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  3. #隤踵游
    $ T6 i4 h2 [0 f* C' r" X
  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5 L  _/ V6 M, [9 q
  1. [ssh-iptables]
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  2. #臬血0 ]( o1 T# B8 e6 g
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳0 k7 D+ L3 z3 V
  5. filter   = sshd
    ' U9 J, O6 a2 n2 I; N
  6. #iptables閮剖# o& }# |6 J- h: f
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
    2 p* k) J( \- y; \6 E: g
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. 4 d' C  r4 m) i# J9 f0 S+ C1 Q
  11. #閬閮瑼
    * `! R: l1 V1 w, Q0 L4 }% }
  12. logpath  = /var/log/secure
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  13. #擃閰阡航炊甈⊥9 `4 A2 f  S! J5 j) u) J  n
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅
    ; f% e. |2 }  D+ Y1 ^/ T
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
  V) u8 q  D% x- M$ O+ ?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; ?7 }5 c( a2 m6 r  V, Y& m
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆: T& G& B# ^( m  z1 O! s
vi /etc/init.d/fail2ban
3 `8 M0 Z% d* l! _7 h曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {; a3 v# W/ F, i: B
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid( p7 W# b1 ^7 A8 o
  4.     if [ -z "$pid" ]; then4 h4 r4 h* e: p9 O3 @, i& G/ _& g
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban6 K2 r5 n" H$ b+ Z9 Y
  6.         $FAIL2BAN -x start > /dev/null$ `2 \6 h# X: i' n8 H8 D
  7.         RETVAL=$?+ x( c- J  h0 l
  8.     fi. \+ M' |% O* M  l2 P: ?! K
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban* N9 P* q7 [9 q/ `
  11.         echo_success! d& G! n7 p4 C9 B6 Z+ f0 J
  12.         /sbin/service iptables restart # reloads previously banned ip's% f. \- z, f; ?! H& u
  13.     else: P1 ~. {  f* N3 B# C% ]$ H
  14.         echo_failure
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  15.     fi
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  16. : n8 ]6 i8 {7 G. r6 x. B
  17.     echo6 U$ W( ^  k4 R5 s
  18.     return $RETVAL$ C6 z9 ]6 q6 U7 ?
  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() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: ": X- e3 I# \5 D5 G
  3.     getpid- ^) f! [/ Z3 J& j; I5 I
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then3 \% Z. }2 Z, H
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null! I0 h' l, Z! t* v% T9 I! }
  8.     sleep 1! ?. ~. \$ {* `" M: k
  9.     getpid
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  10.     if [ -z "$pid" ]; then/ K$ F. G( K; V" I1 A
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else: A$ ~6 D2 {1 n5 o% Z
  14.         echo_failure
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  15.     fi
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  16.     else2 z5 z6 Q7 @/ v  z' D% ?8 O! [, ]( [
  17.         echo_failure6 x6 \- t9 T9 n' b* |
  18.     fi
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  19.     echo: K! c. T+ }) v& K% |$ ]% p
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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$ z+ E/ ^. t' Q3 w8 Echkconfig --add fail2ban
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: B4 W' C1 t5 Y  [p.s
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http://blog.pulipuli.info/2011/07/centosfail2ban.html  : `; h8 V: M4 D' {$ ?; N' H
http://www.vixual.net/blog/archives/252
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