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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 9 S" W- A) d/ x: [% C0 n
$ s2 w. C1 z5 V3 _# {
啣:
- W" H5 T; r# O5 G+ Z5 nCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗$ V1 e! d0 N% x
1.肘um摰鋆fail2ban. p+ }. u2 l  B; Q5 w2 V- o: o! H' [
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)
2 {7 S* ]0 e6 U! r2 u( J4 V
7 u& X. L8 A; n+ a5 C% C$ j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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! c) K2 f) D1 w' byum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atrpms7 b# F* U& _! [, p8 K) N
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
$ H. e+ A  \4 i; Q3 i  [! J8 s0 N( Z4 m  Q; Q
vi /etc/yum.repos.d/CentOS-Base.repo, _) m' o$ s8 y/ N0 j+ ^; N) N; x
冽敺乩誑銝閮剖嚗, Q5 U' ]8 p  O+ H

3 [+ K& A: U5 @1 t; O) @$ D1 a[atrpms]
2 b- @+ e" q8 d; L; I) ?name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
9 ?' H# {( Y  `2 m0 _, {9 V1 pbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable8 A: Q; ^& ^3 R' ?2 H
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms6 j* _+ d2 x4 F7 ?
gpgcheck=1
/ n0 n: C' l3 D" l, U; ]' M7 ]enabled=1
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2. 閮剖fail2ban# C7 I( t! G  A+ x5 \' e3 Z2 p
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf6 @* W1 v$ H5 q: J
vi /etc/fail2ban/fail2ban.conf
0 ~( ]* {0 A! v靽格 logtarget :
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  1. #閮剔
    & l1 x/ z* m2 x1 h
  2. #logtarget = SYSLOG
    7 R% d0 Z; j/ J: }  w0 s, \6 l
  3. #隤踵游
    1 t" B0 L  D% J2 H) W! {5 E* W
  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4 s. X7 b. [1 t9 j* ^4 O
  2. #backend = auto
    3 _' q1 G5 B" \/ N5 k
  3. #隤踵游2 o6 H0 f7 X: a/ ?
  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* j; F! I% \$ V: |6 l
  1. [ssh-iptables]
    0 s5 i- \+ s: f3 i" M) c, v( d# V1 }
  2. #臬血
    0 K2 \$ J" L( y
  3. enabled  = true4 u, o' r! y) A! ~! w6 w# I& D7 R
  4. #瞈曉蝔梧雿輻券閮剔喳5 }9 b' `- b* W0 ?% j
  5. filter   = sshd  r7 l" i. C  H2 Q/ H( s2 h4 q
  6. #iptables閮剖
    ( K1 ]/ H1 K2 W7 F" H
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]. D  t" |' w8 u& I3 t- t
  8.            #潛餅撖靽∟身摰
    5 [' w. @( a* t4 `3 C5 d6 ?* I  U5 {
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]1 b9 K5 ?( M, |4 s& ~! J4 e( g

  10. - A1 r* q7 C# T: I
  11. #閬閮瑼3 V" z1 L$ W! t" w" A
  12. logpath  = /var/log/secure. z0 v) I# T. g! ?: B1 o
  13. #擃閰阡航炊甈⊥) g* c+ Z5 a2 m  D
  14. maxretry = 2
    & n5 L8 t( |. a( S/ A( n! |
  15. #餅嚗-1銵函內瘞訾餅! p: q. c: d, H/ ]" s7 O
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
5 x9 c- j9 m% F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; ?9 W1 i" |1 }! D- Y0 N& j" O
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆* K# N9 c/ O9 u
vi /etc/init.d/fail2ban2 O  S8 a. P( y* s" E
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗4 G; }5 d) H0 ^
  1. start() {4 F+ r/ r2 F* J( w  P
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "& q! ?  F* `- E5 `& B
  3.     getpid- W) H- E3 m3 m) O& |% L4 ]3 ]
  4.     if [ -z "$pid" ]; then, n) \  L* D" H; F0 f
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    - a6 D6 ^8 H5 }3 ?* K
  6.         $FAIL2BAN -x start > /dev/null/ a5 y' F+ u: X& C- R: H' b' E% T
  7.         RETVAL=$?
    - [6 z9 U* V8 d# I, u! q
  8.     fi$ [1 l8 x2 J2 n- @
  9.     if [ $RETVAL -eq 0 ]; then, G( D/ _3 L6 N  {
  10.         touch /var/lock/subsys/fail2ban
    # f) \* M+ D, r8 s! h
  11.         echo_success/ Y1 Y9 z# C7 X7 G9 C% O  z" n
  12.         /sbin/service iptables restart # reloads previously banned ip's( |* ?3 M0 ]/ @
  13.     else$ R- R/ x$ A9 c1 N; [- c+ H" S  {
  14.         echo_failure( s4 f! x" s, Y
  15.     fi
    , ~$ }$ n- n& R$ H0 n# a/ I1 }
  16. / Q/ R# k4 D( P
  17.     echo) B% Y) c8 v. u) N
  18.     return $RETVAL
    2 ^/ Q* n% v8 a  B. n8 R
  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() {! f- N0 R* n  J0 o3 i" |0 M
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    . Q; W% B. U0 \3 i8 t! Y. ~
  3.     getpid
    $ f5 p7 Q% E3 j7 J
  4.     RETVAL=$?
    7 [/ u, E8 v. h8 R% u  {$ y
  5.     if [ -n "$pid" ]; then# h9 P3 v2 P& i9 d+ b( \' O0 Y
  6.        /sbin/service iptables save # saves banned ip's
    & q3 _% q" n0 s# j9 C, e, u1 ?
  7.         $FAIL2BAN stop > /dev/null
    1 f3 L# M4 S* V# |: V
  8.     sleep 1; k0 c6 \; j' J, f0 F
  9.     getpid
    9 W- r" V) T) g4 n, u' }& u
  10.     if [ -z "$pid" ]; then/ y" O+ k8 r, b; u
  11.         rm -f /var/lock/subsys/fail2ban- e* o% A$ x* }3 b) v
  12.         echo_success
    ' z1 E4 j+ m+ e& k  z' _$ }
  13.     else
    4 i3 P% J0 y, Q4 r4 b
  14.         echo_failure  }. ?( N) q5 s
  15.     fi
    8 A4 d# M4 l/ r, _' d* ~
  16.     else& c' P/ _+ f! a% E4 b# F2 ~0 r0 [
  17.         echo_failure
    $ j: r; N0 H5 W% {9 I7 ?
  18.     fi
    7 T( l( ?! e5 v8 _4 q: S4 |
  19.     echo& C% f. @  k3 M6 {4 z
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban
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隞乩 :
/ \6 `7 |9 c# _) X3 k, v9 Uhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  5 {. M  g, x& x
http://www.vixual.net/blog/archives/252% T+ G3 r$ ?" ^% b

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