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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 ! k5 U) `5 `, Q# M: ]
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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
$ d) ~3 b  V* K/ V1.肘um摰鋆fail2ban9 x& E$ z& q" }* m% i
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)4 Y. z4 S# U- ]5 ~2 Y; C) k
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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- ~; M8 n6 d# ~# @6 L- @, u) V/ N. h4 j
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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; |8 R) ~9 V) D) i8 z, `

2 Y) W% x  ~3 w9 V7 A! I+ I. ^- t2 N隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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( F( c9 S9 U  n0 N) ]' K. ^2 Wvi /etc/yum.repos.d/CentOS-Base.repo
1 M$ ~& y' N7 v冽敺乩誑銝閮剖嚗
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* v% Q: V( L- t+ h' b[atrpms]6 d2 U! _! ?' ]7 R
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms& m) M  r0 J# U# ^$ `& g
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable! q$ a2 w" k3 ]) n
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
1 @& j3 r! G# ]$ Q4 H% Ogpgcheck=1  ^# y8 f5 X0 q3 o2 d5 B' s" L
enabled=1: a) Z$ e( N9 @+ ~. j5 G

2 b2 `( n% w. a6 O+ H7 C: P( h7 X  C2. 閮剖fail2ban
$ y  z6 W% ~0 m5 A7 E9 I銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
, }6 N% X- L9 N- n: {# R9 V8 l$ T7 Fvi /etc/fail2ban/fail2ban.conf
2 h6 c7 G9 M  F: y1 q, N靽格 logtarget :6 W8 t1 ?: c/ p* g
  1. #閮剔
    + E5 _# [: Q2 `) z  l
  2. #logtarget = SYSLOG
    $ `* f, R7 H1 l) M% P; e1 E
  3. #隤踵游
    * M, ~+ K$ R0 p6 _
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)8 I5 j8 h  q/ f. A/ @8 D1 y
  1. #閮剔
    5 J# l5 I$ C$ r3 a
  2. #backend = auto $ X3 p  H8 n# n- m
  3. #隤踵游
    % H  p' P6 ^5 r& ~8 v  t2 O
  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]
    & i+ E) P; a4 n8 ?
  2. #臬血2 {9 v+ @4 \6 H/ g9 A1 q# y# s
  3. enabled  = true' Q" T" x4 S3 n( R3 p7 A
  4. #瞈曉蝔梧雿輻券閮剔喳
    " z: I' j! z: V  q! u6 Q
  5. filter   = sshd
    % p- l* x  P+ N. f  X
  6. #iptables閮剖
    5 }+ B# B8 Y6 u0 S3 A. O
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]0 P0 M: I: D0 y% q0 ?8 K- O
  8.            #潛餅撖靽∟身摰7 G2 J% s% H. w6 Z, B6 w3 \
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]- {; Z! Y: m/ I; G

  10. ! S! N; F! O4 C# O; p
  11. #閬閮瑼
    2 T, V8 X$ ]1 {  w" j
  12. logpath  = /var/log/secure1 q9 J; Z; N( {2 S+ R" f' c
  13. #擃閰阡航炊甈⊥
    # {9 r& d8 J. O/ X) e
  14. maxretry = 25 z9 [3 ~! ^& Q. m7 q$ T
  15. #餅嚗-1銵函內瘞訾餅
    / S& c+ [+ X6 B1 r; ^
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
; E8 r& g+ e% G- O4 }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
1 G9 `; P2 _% w- r. P憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
" S& ~& [) a  k vi /etc/init.d/fail2ban
9 T+ s8 a, x: ]0 z曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {- C$ F1 v$ ?- q
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid
    1 N3 X' Z# Z, F0 {
  4.     if [ -z "$pid" ]; then
    3 ^1 |( a8 f) [, R/ s
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban7 e# Z3 E9 d# q
  6.         $FAIL2BAN -x start > /dev/null7 f$ P- L) I, ]( K$ X
  7.         RETVAL=$?
    6 R' k! s$ U) X
  8.     fi
    3 X/ H4 X; H6 v) V' t* N4 c' [
  9.     if [ $RETVAL -eq 0 ]; then
    7 p' R5 ^2 [& S2 M. O
  10.         touch /var/lock/subsys/fail2ban
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  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
    - n! C1 s( b2 r# F; R, b
  14.         echo_failure
    2 i( F0 o6 \' N3 J/ V1 r) r% l/ G
  15.     fi
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  16. 8 A5 N6 m* N$ r( f
  17.     echo
    9 ^2 a0 j+ W8 j( t0 u& ~1 X& e
  18.     return $RETVAL
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  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {- @* ]( k1 S5 F$ O  P/ l
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: ". p8 b' c# i( l8 i; F
  3.     getpid
    4 B5 _" H1 \  B+ |/ e2 P! z
  4.     RETVAL=$?
    / j3 F) k( I8 H  |% e3 d- C
  5.     if [ -n "$pid" ]; then0 `. H4 P3 s8 f; J9 K4 O
  6.        /sbin/service iptables save # saves banned ip's
    ; C3 t7 j2 I  A6 i9 N; {
  7.         $FAIL2BAN stop > /dev/null4 m* p. }0 ?& G, K
  8.     sleep 1/ y6 B+ \% ?7 I; L6 U% s
  9.     getpid
    2 }6 P$ X* ~* R! h$ ~/ N
  10.     if [ -z "$pid" ]; then
    + N* c( N9 L& t
  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else
    0 E+ ?: I/ o+ E4 S; Z' Q
  14.         echo_failure
    8 K4 a) w; R, ~7 s% C
  15.     fi
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  16.     else
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  17.         echo_failure1 I) k' H+ ~  B" h( H
  18.     fi1 r) l6 E5 d2 c. M+ N7 j
  19.     echo+ f0 i: G7 J& ?
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨' S/ l! {. B8 F
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chkconfig --add fail2ban" L% a+ R0 ^9 m1 n7 |% n

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p.s
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http://blog.pulipuli.info/2011/07/centosfail2ban.html    c3 I# s! K  t/ i+ X* o7 ~' ]% Z% Z. x
http://www.vixual.net/blog/archives/252
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