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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 0 D  ^) p) ^# E

$ b, z4 u$ f* N3 O啣:
- h8 p6 k, a' E5 I/ D8 L4 bCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗1 z9 `5 M7 J& \) f/ x& ?6 }
1.肘um摰鋆fail2ban
' H4 N, R( i' `2 Xyum -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)* p( ^# F* A+ u

  I) W/ R2 ~/ ^; l# a; r) h) H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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5 t2 D" C$ a0 H) J! r2 p" Eyum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
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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8 E1 e; y* U/ Avi /etc/yum.repos.d/CentOS-Base.repo
& i' B2 Y7 t0 t; ~( v- X: R8 z* O冽敺乩誑銝閮剖嚗
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% ^) J  s& c# ^[atrpms]* A2 W8 \# d0 W) ]
name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
. u* A' \4 O* d0 p. Abaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable" w8 m& l3 J, \8 I2 a) y8 p. Z
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms# l5 X+ C' w, {$ h: ?/ i* }
gpgcheck=12 `% _4 m2 K( d2 k! B( E* g
enabled=1( a0 e8 x4 h% U1 f. Y

, D* p8 w+ h4 ?- M: w2. 閮剖fail2ban
. J- ?. y. C% m3 {6 M" K0 a( N, b" Q銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf- w- K9 P; J2 H( K8 g
vi /etc/fail2ban/fail2ban.conf
, Z1 Z" P6 e8 |# U% I% `靽格 logtarget :
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  1. #閮剔2 [$ m+ L$ K! T2 P! h! V
  2. #logtarget = SYSLOG
    ' T1 q. c) e4 O9 V; u
  3. #隤踵游8 T2 H# C" g' R' Y. z
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)7 O1 l- R( l8 |% k
  1. #閮剔5 _, a: u+ g# H; u; y, V6 X$ m+ F8 H
  2. #backend = auto
    % N$ M( D' \, J( ~& A9 H0 M- o
  3. #隤踵游# d* E1 a+ G4 x% r5 z$ s; o
  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6 i6 J4 k0 b7 W7 y
  1. [ssh-iptables]
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  2. #臬血+ W6 U- Y  U% e+ N0 A$ K
  3. enabled  = true$ G6 v9 V! ]% i
  4. #瞈曉蝔梧雿輻券閮剔喳
    7 s" ~, D( r; ?2 F
  5. filter   = sshd, l% w: n# h+ e6 G
  6. #iptables閮剖3 W: \( j, w3 t+ j+ U) [) M$ _
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    ) [4 {5 Z9 M! n% P; D
  8.            #潛餅撖靽∟身摰
    . o" ]1 L0 Z( R% ]$ g
  9.            sendmail-whois[name=SSH, [email protected], [email protected]]
    # f' Y4 y" Z8 v5 L# ~

  10. $ i8 u8 b) c" Y' Y# q% k, T7 `- V
  11. #閬閮瑼; ]" R4 J$ C/ c
  12. logpath  = /var/log/secure1 [# J# C$ H8 D9 g( b. R
  13. #擃閰阡航炊甈⊥
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  14. maxretry = 2
    9 ~7 u8 a8 ~& c7 ^6 h
  15. #餅嚗-1銵函內瘞訾餅" ?1 c& m/ m( g5 h) r/ j% o" Q: Z
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬) n! @3 R5 P0 y5 F  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* Y) i5 ]8 R5 \7 R1 |5 A
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
( l& S: `  c. b, |. s- f$ P# T vi /etc/init.d/fail2ban
. v1 i! E* g& {5 \! r9 o* s$ E曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗- v% L0 Y! J  W, W1 e7 g/ P
  1. start() {
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  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "
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  3.     getpid! z; K* g# Y- J! o5 N
  4.     if [ -z "$pid" ]; then
    . {+ W& {7 K! p9 ]  \
  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
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  6.         $FAIL2BAN -x start > /dev/null1 T/ @( J1 y+ k( N, B
  7.         RETVAL=$?% B, ^5 J2 I$ H! D7 S0 H( g
  8.     fi$ D, a5 M: T1 j# d3 X
  9.     if [ $RETVAL -eq 0 ]; then2 L, |7 V2 \. D" V3 Y: n/ _' k
  10.         touch /var/lock/subsys/fail2ban# \& o4 z$ ]& O
  11.         echo_success" z& P/ T, x5 w
  12.         /sbin/service iptables restart # reloads previously banned ip's
    7 {3 @( p& Q1 t4 f9 X7 I
  13.     else
    7 b9 K  T! k8 w5 |
  14.         echo_failure9 O, h, q9 T, h6 t# F7 g
  15.     fi
    % S" d3 q+ P% z( n. ^1 Z/ |# k5 |
  16. 3 G  W  X1 F& N  X. {
  17.     echo
    1 Q/ M; N7 ?1 l( E& B9 H
  18.     return $RETVAL- n* m" ~2 A4 Q  ~- ?. m
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗9 N7 `: E+ q4 E9 }3 g0 t8 K
  1. stop() {
    , U0 E1 Z' f. T5 }) Y$ \
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
    # J+ V0 P7 L$ f" h" V' r% q
  3.     getpid2 G7 i) V' r# c/ Y% g( x
  4.     RETVAL=$?1 \! o8 W3 `/ C' Y& H
  5.     if [ -n "$pid" ]; then
    4 q2 |: X- ?) E% a/ ?
  6.        /sbin/service iptables save # saves banned ip's+ W' H' i% h, m! a, D
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 10 p% X2 C8 H* Q: f, O" ^* I- _0 ^
  9.     getpid; o% N8 ?$ H. F( V0 {  r/ ~! x
  10.     if [ -z "$pid" ]; then
    9 j( L# t) O  X3 r# S
  11.         rm -f /var/lock/subsys/fail2ban. T# c8 I6 g7 P) B
  12.         echo_success2 O3 L2 e- K3 V9 n
  13.     else! o3 j' N- h$ l2 G0 ~5 j0 n: a
  14.         echo_failure0 \' H9 h! J! n1 ~  r
  15.     fi
    5 v: m3 a8 o* D- ?
  16.     else
    . Y5 z# [1 \2 n( f" _6 d$ @6 l
  17.         echo_failure% `, j3 _! h- [2 I2 r: k
  18.     fi
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  19.     echo
    " K0 I8 s- s5 k$ @0 q
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨7 p6 A% g3 }9 _+ j
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chkconfig --add fail2ban
# k3 n" s- |8 A. y
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p.s
" ~3 O. L& `! h. Q, Q( E: A隞乩 :1 B6 t2 [: t! Z7 z3 L
http://blog.pulipuli.info/2011/07/centosfail2ban.html  ! c5 G2 l' [& q) s; j9 x# d: N
http://www.vixual.net/blog/archives/252
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