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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 * B" w) B  J# \8 S

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3 C2 s6 T$ l* B/ |! w9 iCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
2 Z3 B2 r  {1 \* H" J1.肘um摰鋆fail2ban/ X$ c0 H6 q7 Q
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)
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/ J5 S( \1 C' h8 s; W9 e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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. f, V/ h1 G3 lyum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, X' u6 C. H% a5 v1 D

. n; }1 X- R; v. {+ E8 P% b% H隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo. b$ U5 T2 W! r: q' q
冽敺乩誑銝閮剖嚗6 s# Q4 Z/ [$ u* W' y- M  k

+ X2 m2 s) q* F, r' G# o2 q[atrpms]; I+ k; Z3 G& w  s
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms, M; M  s! e" \0 R3 J; q& h$ m
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
7 U: [/ }( ]2 @% ugpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms& z2 z' {$ H7 I; y
gpgcheck=1
: s0 Z' c) l9 C& W3 A3 @  @enabled=1
- r9 H6 @8 s) b9 M/ @, d. t. B) ^+ n* a! H2 a" Z6 L* M
2. 閮剖fail2ban0 x% k$ T- S4 a  v, _7 C
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf& c; [) L/ K! i" E" H
vi /etc/fail2ban/fail2ban.conf
( [" [! c/ M  [) K1 `) o! \靽格 logtarget :+ i/ L5 H' m8 M0 H/ J" o
  1. #閮剔
    4 y$ x9 G+ x  J) v) r" x! @
  2. #logtarget = SYSLOG# }. K) Q. @) E8 c6 P; t1 Y
  3. #隤踵游
    7 A1 B7 q* q( {
  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# I3 I# e& W3 R7 a2 i
  2. #backend = auto
    # k8 g2 Q: Z+ X0 `7 Y
  3. #隤踵游3 h* A9 n9 M% S+ [# p( [. I
  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( G2 E( |) S2 \& ]0 [
  1. [ssh-iptables]
    - W" }1 _' e/ a9 p, ]; C
  2. #臬血
    # E3 |/ k( F8 p8 e
  3. enabled  = true
    0 L* D, w- }8 S0 \3 M0 U3 l
  4. #瞈曉蝔梧雿輻券閮剔喳
    3 {  ^4 {* P3 B3 g
  5. filter   = sshd( \; N9 Z7 D+ x9 Y9 g
  6. #iptables閮剖$ }% V$ ^5 W. X8 o9 N3 I3 \7 R6 }
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    - g) p) P. R' {
  8.            #潛餅撖靽∟身摰+ S0 @8 u( Z+ \/ F
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]$ k$ x0 S! v0 V

  10. * u: I3 l8 C: x. Q% N2 J1 t3 F
  11. #閬閮瑼; F, i0 l& S# X) S( M2 Y
  12. logpath  = /var/log/secure5 K( b. K/ H8 l8 ~1 s/ }
  13. #擃閰阡航炊甈⊥
    , C0 @) C' P4 m- z% B% ]7 G
  14. maxretry = 2( _9 Y: ^6 j! `6 w
  15. #餅嚗-1銵函內瘞訾餅
    9 O7 o+ Q9 {+ _1 z
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
% n# h. J7 f% j+ W- u6 j# e% l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, |+ P* x' E4 S7 {4 w) I
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆$ o. f& y5 D0 ^# t4 P  E
vi /etc/init.d/fail2ban- M/ z! A. ~1 Q/ X
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {7 E+ l/ B/ Y" b3 L' q& M) m
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "% C; N( f! E) ^+ s% t2 B& A6 q5 x% Y; N
  3.     getpid
    % k' u$ j5 \' S9 X
  4.     if [ -z "$pid" ]; then
    & G7 ]0 Y; c! \( e: G- l1 Z# @+ r
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban. ^4 e0 F1 _+ j, q( ]
  6.         $FAIL2BAN -x start > /dev/null7 q! O) F# L7 |( c2 u
  7.         RETVAL=$?: O7 E  e7 ^  n4 }3 h) L( C! f# D! C# L
  8.     fi2 \0 G2 `- O: l; y
  9.     if [ $RETVAL -eq 0 ]; then& l$ E' A# v7 \  S! u/ f
  10.         touch /var/lock/subsys/fail2ban, J% Q& I+ Y! U8 Q1 _9 ~5 k9 \
  11.         echo_success
    % D) b) X/ S; \4 v! w
  12.         /sbin/service iptables restart # reloads previously banned ip's
    ; ?8 q' G- H( s8 \  _  j# w
  13.     else# {  P5 H2 ^! E9 d7 s% p; b
  14.         echo_failure3 F, E' ^* l* g) L$ }7 I9 ~- K
  15.     fi
    9 `$ S4 v2 M" y2 M7 F" ?

  16. : K5 S5 h! T2 E. U/ r4 E  |. ]
  17.     echo) K3 D1 Z* Z2 M. L
  18.     return $RETVAL
    5 Q5 ]! U: F3 R  i  ]: H
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗' ~. P: ^% J4 ^6 [7 z4 F
  1. stop() {' V5 J) a4 i) u  I% K! a
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    - W* D1 y6 R( ~
  3.     getpid! ~. m, n- [& k) d0 m# W" i* Y
  4.     RETVAL=$?- U/ R/ ?& b1 \8 |& S  Z
  5.     if [ -n "$pid" ]; then
    - c! Q$ }1 d" l7 g
  6.        /sbin/service iptables save # saves banned ip's8 y; t1 w  Y1 x1 g' x& C" S2 b" d
  7.         $FAIL2BAN stop > /dev/null# a  }4 g3 a5 m: g
  8.     sleep 17 i1 y3 z, H/ v
  9.     getpid
    ; [! V1 v& A1 o# ?, j+ [) }
  10.     if [ -z "$pid" ]; then$ S* F% d8 L0 q* b
  11.         rm -f /var/lock/subsys/fail2ban; D) f7 w4 ~7 k& a2 `1 W9 e
  12.         echo_success  k/ S: u2 n5 R0 x
  13.     else
    4 W5 e$ o% ~( D& M( Y7 j1 L7 h+ D
  14.         echo_failure. x# |/ X2 H# \! ?6 M0 G7 Y0 g
  15.     fi
    : V! j# k/ j3 k8 X& ?$ Q) ~/ M
  16.     else
    % _3 S3 h( L: w  t0 T) A
  17.         echo_failure
    ( x; r4 U" M2 l
  18.     fi, ~9 @8 J% }# U' ]: v- o
  19.     echo
    ( f# `; I  Z) r- f
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
$ U+ h1 g3 o) p- \0 U
) y- s7 X# `. [# X$ r8 [) ~chkconfig --add fail2ban
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4 ^2 h3 e" U9 e9 s* E- q% {3 G+ }0 [隞乩 :1 w$ P9 H1 Q' L1 L+ {4 M* J, b
http://blog.pulipuli.info/2011/07/centosfail2ban.html  9 p! j! ^* ~4 B# }' T# u' W8 d
http://www.vixual.net/blog/archives/252
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