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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 + C8 I) b' f7 Y6 ~0 ~; N
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啣:
  r& ?( ?7 \( OCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗0 h1 B- m/ v) ^1 @0 x- k' j( ]. X
1.肘um摰鋆fail2ban
0 y' ]% P; p# K* d' N0 i1 J0 z3 p* 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)
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$ I& {; I5 o3 O& W2 C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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2 J" V7 l5 D& C" O隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo
4 P2 s+ G- R, f4 {, W3 T( }冽敺乩誑銝閮剖嚗" F4 Y! l1 f% Y! W! ~, O

6 K- s" m7 h1 N% @) \0 W7 H[atrpms]" T* g3 A& I: C; p; [
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
0 P) _5 i9 k) Lbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
  H' U. H! K( e2 d0 G: S0 ~gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
* L/ M2 N+ Z1 X3 l( Z% y' wgpgcheck=1: F0 U0 u- Y! P- |& J7 x6 g6 [
enabled=1
# m' y3 p( U' H" T# I0 \) {7 M$ p1 K1 @
0 Y- g: a" V4 D5 Z2. 閮剖fail2ban
2 i* r8 I, b; Y! S銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
: X9 R' @7 V- p/ B. d5 U5 Evi /etc/fail2ban/fail2ban.conf* _* W1 c' \9 o% M$ L" W0 B/ X4 ?6 Z
靽格 logtarget :3 f* Q! X# p1 H4 |, _6 x' d6 q
  1. #閮剔
    / K8 J$ ~2 |7 j2 _0 ^2 H2 q
  2. #logtarget = SYSLOG$ z1 Y+ `: b- E" q9 b' }6 n2 L- `
  3. #隤踵游& j3 z, ~$ B5 g3 w) t3 x7 @
  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
    5 M" m" s/ r3 u2 E
  2. #backend = auto 2 s9 a+ V, J" ~% {! Q
  3. #隤踵游
    . l% d* \3 x, M" Z% {8 S. p5 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" }5 e# v& ?; F. R
  1. [ssh-iptables]# [8 K. j& |$ }. [2 C
  2. #臬血
    3 x3 K' z  z& u+ k
  3. enabled  = true' S3 }7 t5 Z1 w, v3 E* |; z# T% j
  4. #瞈曉蝔梧雿輻券閮剔喳3 p+ O5 M) o1 z* q5 L
  5. filter   = sshd
    1 V; k. q  p5 Z# x' \
  6. #iptables閮剖3 L( N$ p, R0 f& ^& v4 F. ], ?; q
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]' J& t2 q) I+ l5 i1 e0 L
  8.            #潛餅撖靽∟身摰/ b- v8 z1 C+ n- t+ K# u3 N
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
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  10. 7 _8 _6 _% w6 Z4 m4 p
  11. #閬閮瑼9 |% B& {5 c5 f" d: R$ M
  12. logpath  = /var/log/secure
    5 F1 Q# j, z, Q& K/ ]3 k
  13. #擃閰阡航炊甈⊥
    * N7 x: A) G! G% J( v' _
  14. maxretry = 20 ~# O0 i$ X7 [. R
  15. #餅嚗-1銵函內瘞訾餅" x# a+ w; M* U/ x7 t. h: s; N8 H
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬$ ]: F/ L" ~+ Z/ D7 I0 r
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
5 {  S0 t; X. f- P* w5 @憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆' ~+ F$ _5 m( p) |6 ~& w! ?* u- o
vi /etc/init.d/fail2ban
2 _( R% `% U1 T& ]" g# E曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗% p' H6 z- `" m, \$ y
  1. start() {
    9 B3 X+ N% ^4 i; g* ~( x/ }
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "  P8 z# Y! |  o& O% _' v
  3.     getpid5 s' ~3 R: _+ s+ {' g" z$ ]
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    ; q2 ~# m2 I9 Y
  6.         $FAIL2BAN -x start > /dev/null. U* U9 u9 A7 }* x  E8 ^. S5 s
  7.         RETVAL=$?/ ?3 [/ ~' U# ]& J6 D) J# B
  8.     fi1 a9 f2 D* _/ s) Y  g% M
  9.     if [ $RETVAL -eq 0 ]; then1 N, v9 ^& P1 k* |
  10.         touch /var/lock/subsys/fail2ban
    1 x) ~/ K% L0 j7 V4 U9 H1 _/ W. U7 F
  11.         echo_success
    # s9 U4 P# o! w1 j' k% e5 C
  12.         /sbin/service iptables restart # reloads previously banned ip's
    $ a" Z4 s1 B& u  _. L: Z3 r
  13.     else4 S6 N' n' E1 ^% o$ C& W9 f% l
  14.         echo_failure
    $ W1 c/ X# A7 r
  15.     fi
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  16. 6 e( ~( [; S, x- Z8 a% X* f
  17.     echo
    2 N6 U9 e5 ]* F+ c! ]
  18.     return $RETVAL0 @& a& J" @, r' {
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗) X, q! t# E; v7 ]
  1. stop() {
    . \# P1 g* C, Z* f+ A  S0 A# x
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "6 |6 k9 z* S3 S  c1 n. z
  3.     getpid
    6 c  a2 ^4 f7 o
  4.     RETVAL=$?+ H$ C6 N- j( q; n. `$ J% L
  5.     if [ -n "$pid" ]; then; |" x6 Z' k, a2 h9 l2 x* A
  6.        /sbin/service iptables save # saves banned ip's  V! r! M5 W5 a6 R5 s- k) _5 _
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
    8 C5 J% w; H/ O7 s
  9.     getpid$ _$ r( a$ P2 m# l: c) j+ s7 c
  10.     if [ -z "$pid" ]; then1 U. h) b) F2 T' B* i# W, K5 D
  11.         rm -f /var/lock/subsys/fail2ban
    , ?- W& j5 A2 ^
  12.         echo_success' m: F3 x4 Z( |$ O) K
  13.     else
    7 D& I4 |2 i% x9 i) H0 k
  14.         echo_failure
    1 h" y& I! h- E) T( g8 f
  15.     fi
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  16.     else7 ?& E6 [" _1 p) K% R9 p
  17.         echo_failure) ]. K/ B$ n* H2 V" N) P5 t; L+ V
  18.     fi
    ; N9 r% ?6 e, d- I
  19.     echo: w- T' u2 l% y1 d
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
4 c+ ?8 G* R4 s
, I/ r( e# [# m& q( Qchkconfig --add fail2ban
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隞乩 :
4 V2 f" `0 H( J( M& h0 R) I7 rhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
& E" I! \# @; o/ Q3 V" S0 Phttp://www.vixual.net/blog/archives/252
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