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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 6 F6 p5 _7 C4 c# ~

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1 l8 `/ F" T" ^! ]% C" S& pCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
- P! @7 p6 I( G1.肘um摰鋆fail2ban
7 c: k# z- K2 Kyum -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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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
# U' w  a  u8 N" o, N- g& n' e* y/ O) [
隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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7 ?, z- `  A7 E6 R$ C! zvi /etc/yum.repos.d/CentOS-Base.repo
; h! e( Z( C. K) F7 V3 k冽敺乩誑銝閮剖嚗
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, ?- m: D0 R5 n5 x! t- V[atrpms]# {* O  N( C( T; R
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms6 e6 t! C2 ?5 d6 n  \
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
9 Q. W- N* D4 o9 D# S5 D3 s  ]gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
8 I6 S+ S3 a+ e: u) ^gpgcheck=1, S" V! e& z+ ^& h  x7 t' y9 d% D
enabled=1
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& K3 S0 |$ C$ h0 a% }) l, q2. 閮剖fail2ban! E$ Q/ b) }9 s, a8 l( T/ _% Q# b$ N
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf! A' U5 l& {- S) ?: v- H& e
vi /etc/fail2ban/fail2ban.conf
) Z5 G' [) h, x% ~# J( K靽格 logtarget :
# a# V8 N+ |* T5 ^
  1. #閮剔- j, z' ]1 Q# [) u
  2. #logtarget = SYSLOG4 F# G1 B+ P$ m$ t4 E; E
  3. #隤踵游, H& k5 ^, Y1 A) x$ x& B$ E. Z
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)$ Y8 h/ Q$ E  t; f3 D& ]2 W) f9 j  e
  1. #閮剔
    " S7 K5 Q* b2 I2 o
  2. #backend = auto
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  3. #隤踵游
    7 B( I3 @& d3 z2 P5 K5 D0 L
  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: Q4 M  x' S9 L6 f% [  L$ _) \
  1. [ssh-iptables]
    . H7 |1 R( r" p9 D. J- g" m$ ?7 R$ t; C
  2. #臬血3 }: H/ |4 y) o9 j6 \! U( V+ G
  3. enabled  = true6 T1 m# h) R! \- n+ T
  4. #瞈曉蝔梧雿輻券閮剔喳
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  5. filter   = sshd2 Y5 r, e) |& k
  6. #iptables閮剖
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  7. action   = iptables[name=SSH, port=22022, protocol=tcp]. H+ W+ x, B6 n, B5 K6 E. g
  8.            #潛餅撖靽∟身摰
    ' D; i- N, y- R8 d% g5 [
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]% G9 j/ D  E) `; a, D* o+ J
  10. ! l- O- q8 E' [4 p& M. C
  11. #閬閮瑼1 ^) G+ X3 I. K
  12. logpath  = /var/log/secure+ o! W6 d; `" V1 _% ]+ w/ {4 g
  13. #擃閰阡航炊甈⊥
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  14. maxretry = 20 t) R4 ]* N* w9 y
  15. #餅嚗-1銵函內瘞訾餅
    + R* _! o* N% ~  I# V: \# D
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
8 I4 F& _4 w' u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
/ n. }! D# w7 A3 z$ P+ D憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
4 H6 J# b& P0 X& }1 a% t vi /etc/init.d/fail2ban1 ^0 _) O$ e% j  e) {( j' p) u
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {3 E. B  ~1 ?+ w/ r
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid' J; B6 c% B& Y) W
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban  m/ A2 S0 f& G- h7 W1 j0 S
  6.         $FAIL2BAN -x start > /dev/null: ]6 p0 G; T7 g$ b1 Z' r# Q! N
  7.         RETVAL=$?
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  8.     fi: Y) Q7 y; A1 o+ g4 H8 S6 _4 B1 ]
  9.     if [ $RETVAL -eq 0 ]; then
    9 |. v& A# |/ c
  10.         touch /var/lock/subsys/fail2ban- s3 }( i+ T% g; e0 a  m
  11.         echo_success3 E  m# g. s& N, K' ]6 H
  12.         /sbin/service iptables restart # reloads previously banned ip's- \; F% U/ N( K" t
  13.     else  u$ z; r; k8 `) W
  14.         echo_failure2 I" I6 u; s4 w+ U
  15.     fi
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  16. + Y6 U+ \" U5 R% P1 h' }
  17.     echo
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  18.     return $RETVAL5 I8 G3 l$ X, ?
  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: "0 ]( W" {0 G7 F8 ]6 B5 i5 z
  3.     getpid0 Q& @8 `- c% g0 H0 H& E
  4.     RETVAL=$?- o, w# R/ Z" a: {
  5.     if [ -n "$pid" ]; then- n: D  T& N+ q4 R/ Q+ M
  6.        /sbin/service iptables save # saves banned ip's. C; p& _1 U# r8 P2 E
  7.         $FAIL2BAN stop > /dev/null
    # ~5 c. U! Q4 P( ~" @3 C
  8.     sleep 1$ U" z( {: a6 N/ ^* N
  9.     getpid
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  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban8 O- y3 s+ i# ]  H! M5 y% @
  12.         echo_success& i" ~- d8 Q. h' Y( o
  13.     else8 i0 ~' [7 ?/ s& a
  14.         echo_failure! M9 [7 Q% i2 t1 {
  15.     fi1 m7 J% @2 U' \7 j  m
  16.     else
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  17.         echo_failure: Y. H4 a" P1 W  U' b# b. |
  18.     fi7 y9 }0 q6 m4 }  S1 u% o  ^+ n5 o
  19.     echo
    / h2 Z3 l$ i! ~5 X5 x
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨
# E9 ]" v; l8 f) u" O  w$ J% z1 [' `+ Z$ l9 X8 a; _2 e
chkconfig --add fail2ban
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隞乩 :0 y5 }) Y' d) b( V" x6 s' }
http://blog.pulipuli.info/2011/07/centosfail2ban.html  
* D; e' v# X5 N+ a% R2 phttp://www.vixual.net/blog/archives/252" f5 W3 @+ u9 u

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