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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
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  y( d0 Q0 G' P8 K9 o; D1 P/ x啣:
, k4 Y( c* ~9 w) D  @; @CentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
) }. h; `$ @6 ^; c3 ^1.肘um摰鋆fail2ban% |, E+ [" R! `) G8 b7 X4 \( Y
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). ?- o$ o" x6 \9 J

, B0 W8 u3 W! |1 H' Q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* E* L2 \5 j$ k2 E# h, V, K9 M! J4 z
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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# }. a8 h! @0 o* e
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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5 n) Y7 b7 o! G3 S% Vvi /etc/yum.repos.d/CentOS-Base.repo" N: Z# C/ J$ r9 c; X+ H% }
冽敺乩誑銝閮剖嚗
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[atrpms]
! D% T) \9 \6 r6 T! S. e; Dname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms7 [- F% o; {& o3 y
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
+ ?  k" w" h; B" ~8 v0 w4 O( }gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
' X6 Z( U9 Q; L1 X7 K, [8 Lgpgcheck=1
3 [# c& h- _  d3 `. {% ?enabled=1& @: D; @% @6 ~4 J& V+ _
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2. 閮剖fail2ban& f. o+ ?; A3 `9 C! @4 b! T$ M: R1 n
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
& N6 D, q& E% Yvi /etc/fail2ban/fail2ban.conf3 P  Z9 ?( L1 |% }8 Y% N
靽格 logtarget :
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  1. #閮剔* G2 E- N, L7 f& J
  2. #logtarget = SYSLOG
    4 M  C# `+ k& ]1 Z7 {
  3. #隤踵游
    ( P9 O* \) F$ B5 O
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)$ ^" S0 W! F/ T; E
  1. #閮剔  c. ]' [- Y9 N
  2. #backend = auto
    % I. {& {. r1 s+ Y' @9 L
  3. #隤踵游9 x) v8 Q& m" F" u, ^
  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4 c: [$ h; R5 w1 P
  1. [ssh-iptables]; C" ]3 [& p$ T9 w) _4 j( Q
  2. #臬血! ^* M5 f, [2 a. n" d$ |) a
  3. enabled  = true7 L( F8 J! }0 Q/ g% J9 k/ k
  4. #瞈曉蝔梧雿輻券閮剔喳
    3 X0 l5 F* x  v3 N
  5. filter   = sshd( H6 P" j' R0 r
  6. #iptables閮剖& V6 m% \" K+ c& E7 ~1 M0 o
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]- k+ _: q8 H* m* c) e1 p; x( C% ~# {
  8.            #潛餅撖靽∟身摰$ Z! G" h& L6 f& O, u# O" n
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]  _" I- `( S% o# r

  10. 5 _4 T: l' j( K  O$ ?
  11. #閬閮瑼# q: R- J/ {" `1 i
  12. logpath  = /var/log/secure& _* R, R2 o! c6 [
  13. #擃閰阡航炊甈⊥  C) v/ Y# `3 I7 O0 G9 f7 z6 W
  14. maxretry = 2
    6 Y% \# |. d4 [# Q
  15. #餅嚗-1銵函內瘞訾餅7 `* V& e1 J3 Y$ c
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
  r% S9 f) U9 n9 @  S+ [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 i0 v8 N" o5 K2 _% }憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
+ E$ d1 w3 S0 N# p. R& i vi /etc/init.d/fail2ban& q% r' R. ^' w7 d# n
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗5 \* W. `$ r, Y" H. K, H
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: ": m* ]3 K' k9 m0 q% Q# G+ t
  3.     getpid
    6 b5 C. I4 Y' P" @  y& l
  4.     if [ -z "$pid" ]; then1 X7 `9 f3 A9 @( w- K$ J
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban2 w  t+ ~& D4 e9 J0 h; q, ]4 Y( a
  6.         $FAIL2BAN -x start > /dev/null
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  7.         RETVAL=$?
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  8.     fi, s1 c* v6 ]; t3 c
  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban
    / d6 n+ |5 L6 i/ G$ q& q
  11.         echo_success
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  12.         /sbin/service iptables restart # reloads previously banned ip's$ B7 T# s" F+ [% V8 m
  13.     else/ l' M' h9 }- A* F7 t  m, `* y
  14.         echo_failure
    / x/ a& P3 v; W& F
  15.     fi
    : {6 M% Y2 h2 Z! o# s
  16. , i) x3 p+ P6 N0 T$ A, n- w0 r$ B
  17.     echo
    ( |- U( J" N" S1 i: [  N" F: j
  18.     return $RETVAL
      L5 W) \0 j9 i7 n# w1 A
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗7 z! Y9 P9 `( J: H
  1. stop() {3 _# z+ T) ]0 {( J2 u3 y3 a
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "8 t! ^, E5 u9 `: E
  3.     getpid
    ; x! i3 ?; P  k/ \
  4.     RETVAL=$?
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  5.     if [ -n "$pid" ]; then
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  6.        /sbin/service iptables save # saves banned ip's
    + _; L  y" O8 F& X$ p' C
  7.         $FAIL2BAN stop > /dev/null4 X4 K/ S8 J3 [9 _* L. M# x
  8.     sleep 1% t+ Z. Z& Q  \% q- z
  9.     getpid
    " J: A; `6 e( z4 l  Z6 o
  10.     if [ -z "$pid" ]; then0 e0 x) I: c1 r" ^2 C* V5 Q
  11.         rm -f /var/lock/subsys/fail2ban% u6 L( |/ }) N( Q6 m0 X- E2 Y3 G
  12.         echo_success
    / U0 @/ I; x4 u3 U  T+ h
  13.     else& E& s9 w' b1 D) W6 ^2 F* v# w+ ~! a7 `
  14.         echo_failure
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  15.     fi/ v6 D3 J- I8 X7 l; [
  16.     else
      K& \' s5 m, Y- ~7 K9 m
  17.         echo_failure' ?; l5 i* B' U/ @% z) ~
  18.     fi. i" w. ^: a' T5 u' W4 p% s1 g
  19.     echo' x. B! ]3 E2 i1 E
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨7 Q' r5 p3 I# L% }! S) y

' h# b2 Z1 M" u( F* c* y. t: Y- V5 ychkconfig --add fail2ban( a/ P$ e- I# ?7 U$ z, w

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隞乩 :
3 i* C* y' x# b6 F& ehttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
' t' C/ W& k6 l2 }6 dhttp://www.vixual.net/blog/archives/252
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