砍敺 IT_man 2016-4-9 22:36 蝺刻摩
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CentOS 6.7 爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
# r& y( D z2 Y' s" ^1.肘um摰鋆fail2ban+ e: }4 H( W4 d6 }+ {. e! c: Z6 ?) x
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)8 r- a6 M8 }5 b1 }
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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
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
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+ O# w9 g$ [8 g' n" ~* a1 hvi /etc/yum.repos.d/CentOS-Base.repo8 `" ~% y; Z$ v
冽敺乩誑銝閮剖嚗
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[atrpms]
; a# Q3 C" h2 }5 D; pname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms8 A1 X2 j' x+ \" i- b; Z; F
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
3 c# ~* k: a7 [- pgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
3 [' C/ \$ ~, U v8 n1 Kgpgcheck=1
( |: c9 L( T* x, {enabled=1
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2. 閮剖fail2ban# B" K% r; F6 `+ M9 j
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
M2 J3 A7 x" Nvi /etc/fail2ban/fail2ban.conf
( L" Y6 ~. g+ r) T# d$ \' j" g靽格 logtarget : A# M9 @; m7 Q- l4 {( F
- #閮剔
4 [& C# g$ \& z+ c/ @- Z8 J - #logtarget = SYSLOG5 C" h# K U0 |8 p% a
- #隤踵游
' A( z) k* Q: _$ e S - logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)+ z3 J( ]: M# t w5 t2 W
- #閮剔
- e* G- k4 i, ?1 P - #backend = auto
( N0 z @1 d5 m - #隤踵游6 h; P7 r* M% Y+ U) `2 \1 K1 G
- 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$ A2 \' I$ F6 O; g: s
- [ssh-iptables]; G% x1 H% f) r
- #臬血7 f6 b# n" y- `8 e7 e
- enabled = true
4 n& v, S) u1 q, W5 L' Y - #瞈曉蝔梧雿輻券閮剔喳
5 Q9 O0 C1 V& l' `3 i - filter = sshd2 V6 U9 M$ L" H
- #iptables閮剖! }: n% c+ l0 E( @$ t
- action = iptables[name=SSH, port=22022, protocol=tcp]
; |$ H' g8 |0 e- f" V, n* k - #潛餅撖靽∟身摰
0 ~) _3 w& S! M/ Z5 a R9 }2 ]/ c - sendmail-whois[name=SSH, [email protected], [email protected]]! q" h; | u2 |
' O0 s" R8 L x% Y0 V" @- #閬閮瑼/ T4 }! H2 I+ f0 d2 i5 R
- logpath = /var/log/secure
. ]$ ?3 `8 P9 a - #擃閰阡航炊甈⊥* a, {; \2 |* a
- maxretry = 2( i a7 n- L: z, y
- #餅嚗-1銵函內瘞訾餅
& z4 g. A6 [- K - bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬
# ^* u- M+ }6 P3 y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; l; p3 P4 B4 {+ F( Y
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆7 D* r& |. _- c/ g& ?0 Z* ~) U
vi /etc/init.d/fail2ban
. L: A- F" @0 P$ b2 T曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
9 y: l; P5 n0 U4 E- start() {
+ D$ | {% [5 R0 |( ` M. i# p - echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "5 G3 W" U v# s6 Z8 e* e
- getpid
0 [/ l) i) Z% _/ Y$ B* k( S# J2 j - if [ -z "$pid" ]; then
# ~; ?0 N! [1 \5 x - rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
/ n: n) j/ C" U0 r: v( u$ f0 U; N - $FAIL2BAN -x start > /dev/null
, d2 w6 j2 I5 Y8 O$ g! V - RETVAL=$?
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- if [ $RETVAL -eq 0 ]; then, J$ V6 ?* m, F& l- d
- touch /var/lock/subsys/fail2ban/ L K+ }5 G; g7 x, R( m4 B7 n2 o
- echo_success5 _, [1 V1 b( ^4 Z, L
- /sbin/service iptables restart # reloads previously banned ip's
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- echo_failure% P! {0 c+ K" r% e
- fi
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- echo. F: a- W W( s# _7 m0 P
- return $RETVAL
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銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗! L" x* m W7 |1 J9 c& q
- stop() {; E+ _- I6 j& v6 K
- echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "
: {9 g& V u# k - getpid' ]8 p" X, U9 a
- RETVAL=$?- { C6 V; f$ |! y; V+ L
- if [ -n "$pid" ]; then
0 Y' H& T) ]$ @) G7 D5 U. m - /sbin/service iptables save # saves banned ip's
& ~- A- d: R& d5 I - $FAIL2BAN stop > /dev/null
+ L" |* W$ g& ]; `9 w - sleep 1
% T1 t$ R6 h$ w7 ` - getpid# u' d3 c9 O5 F% G/ K
- if [ -z "$pid" ]; then) e9 `) `- Y# T# S2 D6 V0 j
- rm -f /var/lock/subsys/fail2ban
\ U, `, Q, o - echo_success
! i* c, ?: J! N0 F, b0 |, H9 g - else
: y" w" \% V6 ~, o9 [. y) q - echo_failure
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- else4 l! p0 h- U ~/ i0 n/ ~
- echo_failure8 L, J3 A0 ]- S: G% q- o$ N
- fi
, o0 f4 x) ?0 Z, P D% f - echo
& a! \2 P0 ?6 p* a% u( x2 P+ C1 T - return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨
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' h& T! k4 X9 ] b: f' Fchkconfig --add fail2ban c5 M# x! t9 Y U, n$ J
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http://blog.pulipuli.info/2011/07/centosfail2ban.html . K4 V" ]+ z5 ]9 n0 i
http://www.vixual.net/blog/archives/252
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