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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! C2 _( ]$ `  P; f
1.肘um摰鋆fail2ban
3 Q+ M( ?9 v7 q' e; eyum -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), d1 t# N7 X& G9 f* p( g1 t% s' B
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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7 E$ u8 g; U% x! Z

$ N4 O8 s  e- dvi /etc/yum.repos.d/CentOS-Base.repo
8 Z, ^0 _  w$ j" s9 P; [, Z冽敺乩誑銝閮剖嚗
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. o1 [7 S  B2 s- s* T[atrpms]
$ J4 q0 j% J+ _) K' O/ D9 p" Mname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms% D2 i: I( y# R" `. n! b
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
8 C% ~. j, X# ?& ~# w; ngpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
( N" z& d) r7 ^9 o" |gpgcheck=1# l; j8 ^' j* t' z
enabled=1
$ ^# ^- t- p9 t8 D- n4 R8 q, t$ K6 J, q# f, n+ O& j. ~4 o
2. 閮剖fail2ban
# r  D1 d2 d2 `9 y銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf( P% ~1 {7 H7 H& D7 ?5 _2 u; L* J
vi /etc/fail2ban/fail2ban.conf: `1 e  k5 F- k; l3 W
靽格 logtarget :# _  K3 \8 I2 b5 @
  1. #閮剔
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  2. #logtarget = SYSLOG  K. w3 z: t8 ]! J# v3 b; {
  3. #隤踵游) D/ t% T" {5 y9 G& X% @4 F
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔
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  2. #backend = auto
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  3. #隤踵游
    % v# b- o' U$ 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
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  1. [ssh-iptables]
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  2. #臬血
    4 S; F) v/ u. C' m* f$ C; I5 H
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳( Y2 l0 w" N) T- r
  5. filter   = sshd+ c8 k; [) F0 p% D) d2 I: t
  6. #iptables閮剖. k8 N0 n/ g: i0 a) F* ~
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]6 n8 a. X9 F4 ?( P& [2 h/ X; I
  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. : c" O7 L$ G; \, {& N/ T
  11. #閬閮瑼
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  12. logpath  = /var/log/secure* ?0 N9 i( ~* B( |2 Y
  13. #擃閰阡航炊甈⊥, I6 U% s. t: m) J
  14. maxretry = 2
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  15. #餅嚗-1銵函內瘞訾餅# \+ C3 I: e0 M
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
: Z  i& ^+ o$ a! m$ ?3 G2 `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erver0 J8 R' P% r! E0 R
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆6 h( j6 E& |  b' s( @" L- w2 m
vi /etc/init.d/fail2ban
& c6 ~) r( ^( M曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗0 l; Y9 S7 ?2 I! }, F1 B; b
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "7 T: k7 ^9 G' j( @
  3.     getpid
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  4.     if [ -z "$pid" ]; then; c" X8 d$ s! Y1 R, D& s9 [; L9 T
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?" U+ Y& b! y/ @3 x6 a" j& D  ~4 e
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then# i# l& m" F- G! ^6 `4 ]
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success, {1 p9 y8 q( v4 d, N4 Q- z5 w! ?
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
    : ^, O& S: ^8 ]* Q$ b( u- V  {
  14.         echo_failure$ {0 [% W" J( p$ j. f/ ^
  15.     fi$ _5 C. I. _& U0 }( i. s

  16. ! B3 G6 S& X5 K5 A; y
  17.     echo
    1 a, z8 R7 m1 A, x; d$ u8 m
  18.     return $RETVAL) N( V* F% ]- R6 L
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "4 v0 x; _. W( |+ r
  3.     getpid) g$ r# U2 E$ P4 j7 }" R8 I6 i
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's: k1 u' H- P- [8 {  ?$ X9 n5 x" U
  7.         $FAIL2BAN stop > /dev/null) _) \3 D- h8 |9 l) R
  8.     sleep 1
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  9.     getpid2 q2 W$ Y& w- V/ r
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
    # t, D' s. I: S" v5 Q( @
  12.         echo_success% ]9 V1 R! I0 R5 o# X1 c
  13.     else
    # K9 |5 M3 a* U7 i1 k& E9 V
  14.         echo_failure
    # z4 H  K0 H% w5 R) A
  15.     fi
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  16.     else  w& I3 [/ a3 ]- B3 A
  17.         echo_failure
    ; S3 A$ F) [9 w) S
  18.     fi
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  19.     echo0 G# {, d' q1 T! C
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨0 Y* l  V0 I- @3 E7 Y
$ _( k4 N# t" h# G9 r" d8 U
chkconfig --add fail2ban. ~6 u2 x) Z0 ~% b! V
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% u2 x# D! y& C  g0 \! sp.s
  X9 r" O. v9 W1 P$ P# v1 a4 A隞乩 :
1 L4 [5 ^# }9 W" _" y. `* y) chttp://blog.pulipuli.info/2011/07/centosfail2ban.html  ' b5 X+ o1 [! L; e7 W5 Z7 u
http://www.vixual.net/blog/archives/252
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