砍敺 IT_man 2016-4-9 22:36 蝺刻摩
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+ E8 z+ [% A5 Z0 D6 }8 R6 c0 @CentOS 6.7 爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
% F0 q3 f5 K7 t4 W, G p1 r1.肘um摰鋆fail2ban* t& S& }: Y; ~# R; L
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): o \& x; e" E2 \# B8 v- X
3 P4 H7 x( \, a' O: {0 l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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8 q8 e, g* Z0 u7 \- |2 ~2 E隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗. r2 E7 @( G6 A3 F* r
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vi /etc/yum.repos.d/CentOS-Base.repo
2 X5 e/ `' M2 A1 k: r8 x" M' i冽敺乩誑銝閮剖嚗; }, y) x" S# D) I9 ]! d
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[atrpms]
3 E! q+ p/ ?) ]$ y$ m. dname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
5 _, }; e8 l0 p+ n5 qbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable+ R* Q3 T( g3 @3 ?8 A
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms" H. K# O& ?' y+ Z
gpgcheck=1# j% l4 U) ?- a$ z7 |1 W! y
enabled=10 C9 d! q; x! O1 [6 ^
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2. 閮剖fail2ban
( a* U+ B, x+ E e9 c銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
6 k: t/ x$ U3 J# ?vi /etc/fail2ban/fail2ban.conf
$ c. ~3 ], W* {. G; J6 l. Q靽格 logtarget :
. D8 R- e' E W& W- #閮剔% } F; A) d( p X) t4 G/ L
- #logtarget = SYSLOG, @6 G; U8 l. s
- #隤踵游: I2 r" R( D' S) p! R
- logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
, w" _# S. t4 i. s7 I$ K- M: e- #閮剔& }3 y+ Y( Y) O
- #backend = auto & u# t& j( D/ r$ v( z5 ?
- #隤踵游
4 E9 E( H! | k% c3 J - 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
9 l0 @4 m' L/ Q8 E5 G$ [- [ssh-iptables]
& z2 `+ l% a6 b. Q- l - #臬血! k1 _8 Y: T" ~/ V% g
- enabled = true
& o. L, y1 m% E - #瞈曉蝔梧雿輻券閮剔喳7 j: Z5 z2 x7 j/ ?
- filter = sshd
! D+ V; o+ D4 Z' i& o3 @$ v5 O - #iptables閮剖, o1 M- C$ g" I; O; d* I
- action = iptables[name=SSH, port=22022, protocol=tcp]7 T) M; u. d+ M' y
- #潛餅撖靽∟身摰
# j" j- B( h$ Y1 g) A( f V @8 H" p - sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]' \5 t' x5 P* h [/ Z$ H1 e
& H3 K: p6 O/ l- #閬閮瑼
1 ]% B. J' b9 N/ O3 _0 e& h) S - logpath = /var/log/secure6 S/ S+ ~2 H' i* c0 k
- #擃閰阡航炊甈⊥# ^$ w9 Z& v! ?6 S8 V; d
- maxretry = 2
$ A4 u& m. b( n! N% | I0 ~. ` - #餅嚗-1銵函內瘞訾餅0 \& r% v5 G+ I
- bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬# x' g" O2 u w# c( h, I
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
! J# O( ~# H3 D2 b% j, P& y憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆4 E* J- j- u6 ]) i" m
vi /etc/init.d/fail2ban2 G( k) T8 r. G& |
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗7 [2 [, A2 c7 t6 x6 V8 F
- start() {& G/ u* o! t, [3 K0 K6 U3 K
- echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "$ S, q2 w! j* ]
- getpid
$ s8 T' U: c; F# L! o/ A2 w2 n% ^ - if [ -z "$pid" ]; then
7 I6 i: f" F( E, i - rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban- I3 s& y, u$ t* v8 }9 k$ F$ q2 @
- $FAIL2BAN -x start > /dev/null
# M7 {' N4 R* U& M m6 W - RETVAL=$?5 V1 J- z3 B/ h$ Y) V/ g/ J/ Y- Q
- fi8 m* V* d v+ h/ r V0 Y: C( f0 \
- if [ $RETVAL -eq 0 ]; then
# q- t- Z( n* p' G/ @1 W: Q5 K& u$ p5 h - touch /var/lock/subsys/fail2ban) Q: N7 d- t8 @$ O! s
- echo_success
7 G2 u3 p4 ?4 m( D - /sbin/service iptables restart # reloads previously banned ip's/ h; O6 O4 i1 x4 Y7 F( W) z
- else- f% u- S& p7 Q9 G0 N
- echo_failure
) f ^2 D1 S ~3 e/ l$ U* S$ }+ S- h - fi
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+ ?1 D$ q3 m2 s3 t3 w+ L- echo8 B6 e, S! t3 _$ U4 R
- return $RETVAL5 ^, x0 m- U+ ?. p5 V
- }
銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗
# h& _8 K& j( ?. x$ {5 P- stop() {
, {5 D1 `! a# d2 O: H( L, o - echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "
+ A- B" a; k" S4 @ - getpid: s [( C- b1 p6 r
- RETVAL=$?
+ e1 c7 i8 P# P - if [ -n "$pid" ]; then
# V4 F! b7 L0 d" M* C; O7 T - /sbin/service iptables save # saves banned ip's
- g" ^+ m/ {3 U9 r0 _9 g/ Y - $FAIL2BAN stop > /dev/null2 j3 R* O) ?' d; _1 J6 z
- sleep 10 I* B, w+ S4 c/ g
- getpid
' b; J) V$ ~( I" a8 m4 }" z d - if [ -z "$pid" ]; then0 q( |% S/ V7 t6 {5 R- E3 W+ [& ^
- rm -f /var/lock/subsys/fail2ban% v' H; {/ b& G
- echo_success
. {% i% h7 A% l. X. s7 Z# q - else
- F& t2 z. O+ O - echo_failure/ `5 @: \+ \" G! T, Y7 H
- fi
, V `' h, ^3 D& O: [- ?) j3 c - else
0 ]+ ^% F' @+ f& i4 L - echo_failure
# i" \ M" M' J4 c5 b: @ - fi
' L0 @2 t- m# l! a. X - echo( u+ N6 X# M8 B x% R% s, a4 ^; t/ I
- return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨: |/ Q+ e9 w/ C6 C
4 S) F( ~6 [2 A4 O" D achkconfig --add fail2ban
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隞乩 :
+ W3 S- B+ G, k. m& e- t% E8 ?+ fhttp://blog.pulipuli.info/2011/07/centosfail2ban.html 5 p- V' F# Y {# \5 O o
http://www.vixual.net/blog/archives/252% l$ V% H+ ?% Q
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