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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 4 W- x/ B. d7 x4 @- T0 w+ A' M/ i

) y- I: V0 i# A. l4 ]啣:
! V6 A) ]4 v+ g' ?: n  vCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
9 z* ?# h* F6 t& a4 `* [) O; z& B1.肘um摰鋆fail2ban8 z5 q- T5 w7 c" s
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)) ?. |$ J( v* q4 E  ~6 X; B  N* J
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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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! c& v# K# |* hyum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( ~7 T" ^! F2 \2 {3 N0 \& d
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo5 ^9 v! D0 _# P! a' M# z
冽敺乩誑銝閮剖嚗+ u  K1 j" m+ j5 w' [" H4 U7 C. W- @; V
* D$ R( |  H+ P, m7 |
[atrpms]4 t4 ~$ X0 c9 a& q9 Z
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
- |$ R7 u7 Q: I- Jbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
6 m4 f- s9 g  C! d- A) {, Mgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
! m2 W1 R$ M; s, W# fgpgcheck=1
; u5 k9 w2 G' j  |/ henabled=13 s+ o+ t6 p' K7 g9 x
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2. 閮剖fail2ban! v: P! C2 Z% ~2 R
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
$ d1 ~; X1 ?1 m% ^vi /etc/fail2ban/fail2ban.conf
8 r, _- L- y3 x% s靽格 logtarget :
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  1. #閮剔
    + u# I# ]- z4 A, v6 Q8 ^% ^
  2. #logtarget = SYSLOG
    3 y2 i: g9 j2 O
  3. #隤踵游# {; c5 V* l5 d  F/ f
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)+ e( U1 X2 K8 W
  1. #閮剔/ t: X' ?0 ]' u+ V7 j
  2. #backend = auto 1 n2 B5 f: \, ^. s* g
  3. #隤踵游+ x3 ]7 H$ D0 F) d9 ?7 [5 H0 F4 k, n  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$ ?3 Q% f3 w& i  j
  1. [ssh-iptables]
    / L' y2 z* @( l
  2. #臬血
    # g. I6 N/ b: Y
  3. enabled  = true
    % Q$ _( H" T. y! P
  4. #瞈曉蝔梧雿輻券閮剔喳4 z% H: o$ ]0 J( c+ i
  5. filter   = sshd, t* j9 ]+ l, [
  6. #iptables閮剖
    * K5 ^9 k' \1 W
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]4 H! U- _0 S- j$ l. w; l" w
  8.            #潛餅撖靽∟身摰
    / l# p1 [. r! Y0 D3 u" o5 y1 S3 f
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]. }2 Q0 b6 h. D( }% w" A6 Z
  10.   D1 e  q& E7 t, t. a8 \# J
  11. #閬閮瑼
    9 `9 Q1 b6 g2 u' ^
  12. logpath  = /var/log/secure: `8 z  O8 {: ?
  13. #擃閰阡航炊甈⊥- S2 I3 K. ^5 x6 `- f
  14. maxretry = 2
    ; \. Z/ X9 ^/ A' M% |& w( O
  15. #餅嚗-1銵函內瘞訾餅& \! y6 s9 [, @6 v/ t. ~/ }
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬1 j& m0 W) N" g: g  C
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erver3 |4 H6 {/ G1 L9 O- L5 |5 i* c
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
6 }+ g9 Y) z3 g3 h$ Z2 }7 { vi /etc/init.d/fail2ban, ?+ C1 e" a; r
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗9 C0 B  d8 h! @( B( Q  O/ v9 r
  1. start() {3 k# ~( l3 N9 o
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "0 e- V# P. Y( ~2 v& W' `& X
  3.     getpid
    3 U  y9 ?- @) G8 ^8 T* Q8 U
  4.     if [ -z "$pid" ]; then
    4 A; E/ {& @+ c: E; T: v9 R$ u$ l
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
    / x- l& |+ Z& H2 o! v* o8 d6 d
  6.         $FAIL2BAN -x start > /dev/null( u4 g" O* d+ G4 a+ m# k: ^
  7.         RETVAL=$?7 _6 C# I; |: L# G& I$ o4 W4 T
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
    1 b4 v& ?6 K; ^
  10.         touch /var/lock/subsys/fail2ban
    5 k9 X" ~+ F4 n! Y
  11.         echo_success0 ]5 \+ C! A. V4 w( o: M
  12.         /sbin/service iptables restart # reloads previously banned ip's
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  13.     else
    + E8 b& [* {5 W) i
  14.         echo_failure
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  15.     fi: q" @8 u. {& W- Y8 o
  16. , Q+ Q) P: P9 ?5 n" I
  17.     echo
    % }1 j7 u- i) w+ x4 R/ P! G& K
  18.     return $RETVAL( H% F+ `2 T5 K) P- j
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗, ?/ V$ t6 v7 O
  1. stop() {
    6 E: Q- H/ d: E& e9 K$ d
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    9 _  |+ i6 b0 U+ O1 [" w' K* x1 }
  3.     getpid
    1 |0 c# @$ d% M3 G) S4 q
  4.     RETVAL=$?5 E' m; d7 L/ X1 D. l
  5.     if [ -n "$pid" ]; then
      E4 }5 [7 W- w
  6.        /sbin/service iptables save # saves banned ip's) X5 D; Y' \# j- ?+ [* X& p
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1
    , n4 \2 e: G5 R* _/ s
  9.     getpid
    1 I7 S: R4 f' F, w8 a9 \
  10.     if [ -z "$pid" ]; then' G0 u9 k5 s7 K9 V& g) D6 r
  11.         rm -f /var/lock/subsys/fail2ban! u7 V5 [! K8 m8 m( c7 f1 S
  12.         echo_success
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  13.     else
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  14.         echo_failure7 q4 o* `  a6 U$ p8 U+ N
  15.     fi' P6 G5 N3 o; y) @, T9 i; W
  16.     else
    1 ?6 a; P. t/ n5 p+ y  V
  17.         echo_failure' `  `2 k! F" v; ]. [
  18.     fi
    + S. j) F5 x8 w& p; m. g
  19.     echo
    . Q$ }1 ^2 A1 o) {( y
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
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4 v; _  V7 m6 b# |5 Q, p7 ^6 \chkconfig --add fail2ban* z* h- N- W& I1 O/ {' i& f# u5 i7 S3 l. \

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4 j$ x: q1 c3 H* V7 Hp.s
- }% D2 W! U+ z9 e* Z  P% y" M" D隞乩 :, o4 r2 g$ U" q* p6 w/ H0 w
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
1 _! Y- z1 `! k, o  J, Whttp://www.vixual.net/blog/archives/252
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