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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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: i2 g* o+ k, m/ ]* S0 cCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
4 {; ~4 J5 ?6 d% w1.肘um摰鋆fail2ban
& b8 T7 ?9 \0 |& c4 a3 l8 b: Qyum -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)$ ~: l% l9 r- `9 D; x% B- [
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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9 @) K6 [, ^% K/ |
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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' j4 l% M7 u5 p4 a' G
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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$ J, V3 @" I0 zvi /etc/yum.repos.d/CentOS-Base.repo! d" o$ u+ Y1 l; f4 `
冽敺乩誑銝閮剖嚗8 r. n! o( \* I' {6 J, g; c
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[atrpms]. q% t  e/ @# S' @& @
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
( M% T: l, e7 A' ~; {baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
# T% S# T) u/ B; s7 ?5 Q7 Z9 X! qgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms6 v) b- }7 o) t6 _+ ~5 j
gpgcheck=1
, D6 Z: Y2 S9 I  W* q" l/ i7 zenabled=1
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2. 閮剖fail2ban
/ |! ]' Q6 B  s( b& P銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
( Y( Y$ j/ b9 O" F7 B7 d# hvi /etc/fail2ban/fail2ban.conf" I  `. O" C$ F/ b
靽格 logtarget :0 C) L; {  I$ e( ]
  1. #閮剔
    4 [4 I4 q4 M3 ]5 p: {
  2. #logtarget = SYSLOG
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  3. #隤踵游1 q# R6 F9 y# Y8 Q4 N9 R
  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  j9 q9 M+ N% |% C' G4 A& |
  2. #backend = auto
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  3. #隤踵游
    1 U5 G! g/ `, J8 k7 \
  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
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  1. [ssh-iptables]! y3 i2 R% _4 R4 _& }7 W% K
  2. #臬血5 i( @1 A8 _# _
  3. enabled  = true6 ?' D- B( n$ O$ n2 U( o8 J
  4. #瞈曉蝔梧雿輻券閮剔喳
    7 K6 Y% V: {  D. ]
  5. filter   = sshd
    1 @5 P9 M- x% r3 e) v
  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
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  8.            #潛餅撖靽∟身摰
    ) c' N; n' I' R) G/ s
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]
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  10. 9 o+ i: C5 W' c7 c* J0 S3 I
  11. #閬閮瑼
    % b) o. R+ A' X$ d3 s( b: q
  12. logpath  = /var/log/secure& t8 Y( ^! F. N4 x
  13. #擃閰阡航炊甈⊥8 M" |! E( H* j* M  B8 L
  14. maxretry = 2
    & U: Q( e$ k' e9 S/ {
  15. #餅嚗-1銵函內瘞訾餅
    3 b7 O" r3 \& k0 T, g
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
' W. _8 U0 h) E5 [% S6 |$ V( @; X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
7 y8 n, G& d; ?# C- A  d% ?9 y憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆! ^- X+ l; Q$ W& u9 Z$ H
vi /etc/init.d/fail2ban
3 z; R, C& n+ a' D- C曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {
    5 }$ Z/ i: F* w% [  c' O
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "( E+ ^" \: G. u: Y/ L7 D; W
  3.     getpid
    % a2 l4 n1 a( k
  4.     if [ -z "$pid" ]; then6 O% U  V: W7 G4 j) w3 i) `- d; d7 P
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban  y0 N/ M/ |5 g  S3 j, D' j
  6.         $FAIL2BAN -x start > /dev/null  S* c# ~+ u2 D; q
  7.         RETVAL=$?+ ?+ f  N# C8 y. S# L. ^7 _2 v
  8.     fi
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  9.     if [ $RETVAL -eq 0 ]; then
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  10.         touch /var/lock/subsys/fail2ban5 S$ D. w: ?' L* b
  11.         echo_success/ W% [4 K8 E+ M9 o0 K3 u
  12.         /sbin/service iptables restart # reloads previously banned ip's& A/ v" ?7 D4 _$ U3 X/ y
  13.     else
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  14.         echo_failure; f  h' }5 u, v" [6 ~9 v
  15.     fi5 n2 U: N  m( q: `3 x, m

  16. $ a1 k+ J5 J* t+ Q
  17.     echo- |3 E+ u+ P5 q" }, F
  18.     return $RETVAL1 A) x/ C7 H. F# T
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗
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  1. stop() {
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  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid; _8 L3 C0 Y6 i# [: a8 @
  4.     RETVAL=$?2 q, L2 @3 H3 M" t2 r
  5.     if [ -n "$pid" ]; then9 C  Y  u" r' n9 E) t& X' W
  6.        /sbin/service iptables save # saves banned ip's
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  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1+ Y- k: |& Z6 q2 [! \7 O' T
  9.     getpid
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  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban
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  12.         echo_success
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  13.     else
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  14.         echo_failure
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  15.     fi
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  16.     else; Z, q; ]3 e4 K3 R- {
  17.         echo_failure: _" I+ K+ f. J  o: i1 e
  18.     fi
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  19.     echo
    - l, {) Z) [+ [% _; R
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨+ u7 q* S! m8 q( E' @

. L( H8 M$ p! N8 v" J! fchkconfig --add fail2ban) R4 L" ?+ M. v0 ?) D& |

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隞乩 :
# K, g) |7 Q& H. Whttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
  l1 a$ A  r3 z' ghttp://www.vixual.net/blog/archives/252: z2 p; |& k6 D4 D9 A- G1 V, j

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