砍敺 IT_man 2016-4-9 22:36 蝺刻摩 ) a8 N8 U/ ]1 G0 O
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6 U% X/ D" C, A1 f6 s8 \- rCentOS 6.7 爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗) L$ a2 i" _ ]: `3 B$ v, r
1.肘um摰鋆fail2ban) I ?# j! ?0 H+ O3 k
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)4 p$ Y/ n3 `$ C
5 a5 B* ~) s+ ^. u2 c9 N& ?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$ R" G' Q5 I1 g: D4 e
5 W2 Y& J; P/ G! qyum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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* p8 W. \4 w6 v) l隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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vi /etc/yum.repos.d/CentOS-Base.repo
0 k3 ]% u! \3 n1 h, L冽敺乩誑銝閮剖嚗
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[atrpms]
1 o1 p2 U- n& c! F$ Qname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
/ {# t% {6 C7 x1 `" Jbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
k v0 n% i& e- g$ E3 jgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms( ~, L+ d, {- B/ z* g" h& i1 A1 g
gpgcheck=1
; N# C. {% M, j( u; M" Wenabled=1
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2. 閮剖fail2ban
* s* G5 D! Q2 m: J' n銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf7 c _! F! l$ C: T3 q2 }
vi /etc/fail2ban/fail2ban.conf% P1 Z" {- [4 g/ d% ?$ u5 Q0 ^
靽格 logtarget :
" M: A# o# M& N6 L& ?- #閮剔
0 o1 V( }; q3 z/ C7 C# f - #logtarget = SYSLOG
2 k" T( Y) S% I1 E# |% W - #隤踵游
8 e$ Z* R# m5 n( z, I - logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)/ l: h6 n7 d4 h: K* \0 c
- #閮剔
; V, X$ ]! N3 I9 K$ e" l4 N$ z% ] - #backend = auto 6 b* W1 n- K2 L: F6 p1 z B
- #隤踵游
# ~9 ~+ T: `! {9 a% E - 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1 X. b+ C0 B- Z% ?# n5 r
- [ssh-iptables]
. O! ?* |. Z' q1 c5 k# _9 o; C - #臬血# Q. T! y* K9 q- l
- enabled = true1 L: }! b8 [ g" [
- #瞈曉蝔梧雿輻券閮剔喳
8 ]* E: k5 [9 h( X( {! T: h6 s& t - filter = sshd
l- ?4 t# N! k/ y1 \( q& |9 o - #iptables閮剖
, ~, J; I. o5 ^/ V G& G - action = iptables[name=SSH, port=22022, protocol=tcp]
9 V/ l) d! x) A0 S9 S - #潛餅撖靽∟身摰/ i$ }: Z" m4 c$ ^
- sendmail-whois[name=SSH, [email protected], [email protected]]7 ?) S, t- d& I/ U
2 Y9 [5 [- K5 K- #閬閮瑼: ^& v; N" u. A7 v
- logpath = /var/log/secure4 g1 m/ Q' M6 p6 i0 d t2 l
- #擃閰阡航炊甈⊥
/ h W: T; T& y' ^- o - maxretry = 2
/ q: j* V% k, k9 {, b8 z! t) i - #餅嚗-1銵函內瘞訾餅$ m( g3 Y# r( {- d# q
- bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬
; j# p4 [% X2 Y9 z- z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
, K* F F! e4 j5 k憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆2 _$ G7 Y4 R( E1 j: V
vi /etc/init.d/fail2ban0 ?; g' b( W" y9 x8 g1 v
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗6 m7 |* ?; \ S% S6 I$ m. k- |
- start() {% N: y2 }1 F8 f: l! k5 S% K8 [
- echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: ", B$ V r$ G* j9 u2 c3 I
- getpid8 x- K4 T7 d- _- F7 U
- if [ -z "$pid" ]; then# g7 v* a, v8 Y3 ^& h( T" }6 l
- rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban4 [4 ]: M! h6 e' m& Q+ V
- $FAIL2BAN -x start > /dev/null
; e/ h0 F: [4 v6 z; S* ^ - RETVAL=$?$ S8 g" ^% y4 K4 v, M0 S
- fi9 ~) H6 M" L7 K1 t; H
- if [ $RETVAL -eq 0 ]; then
# f, i* ^2 K% n, O; r' c - touch /var/lock/subsys/fail2ban
3 x) a; J1 @7 c - echo_success# ]5 M3 H3 U p D
- /sbin/service iptables restart # reloads previously banned ip's
* H6 W, G3 g3 Q9 B7 h5 C - else
: N* B& U! t; e1 } - echo_failure2 t9 T6 Y$ ^8 b5 n
- fi# q6 V/ B6 j) Q) {
- ' Y1 s- h% M1 S, b$ O) K
- echo. t G F5 N3 D" L h: }1 l
- return $RETVAL* g9 M5 _2 S4 @
- }
銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗7 a: L5 j: x; v$ s/ C# `/ J7 F
- stop() {) v" |! u k' W7 H _
- echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "7 c ~* c5 V7 p& \' }# L c
- getpid
# Z( Y4 l& Y( A - RETVAL=$?* T& K7 V& B5 Q9 x
- if [ -n "$pid" ]; then3 m8 @7 W3 n, O
- /sbin/service iptables save # saves banned ip's
! g# F; i# |& o5 C8 y( \ - $FAIL2BAN stop > /dev/null: u" k7 A% l$ I8 y0 L
- sleep 1
( B' g3 r& ^2 t. c - getpid
7 l8 s: u5 R1 A( [ - if [ -z "$pid" ]; then
' [/ Y! |# Y& Q6 r9 o b0 u - rm -f /var/lock/subsys/fail2ban" I7 m- t" m0 p: V7 a9 n' Y! W
- echo_success& b) q( {. C' G9 ?7 b
- else# @ @' Q* F) [( G$ A$ M* G
- echo_failure
: C5 B0 p+ A, d3 ~: \/ T - fi
- @! H: ~% u$ w/ d - else1 @, f$ x# X2 l- a' e" \4 r
- echo_failure
0 o" k7 a( X6 V- M& S$ c - fi
; Q. x! [2 m% d - echo5 G2 {! `# g+ C
- return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban) P2 }6 S5 @ h
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隞乩 :
& I D( w" M( H' @; r/ g. _http://blog.pulipuli.info/2011/07/centosfail2ban.html : @: F+ @, ]! k; P" i2 D9 U% t
http://www.vixual.net/blog/archives/252
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