砍敺 IT_man 2016-4-9 22:36 蝺刻摩 * m6 q, @' n% Q( I
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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
/ C, ~3 m9 I- f4 c1.肘um摰鋆fail2ban: t% T& f3 G3 U0 K8 g
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)
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# {+ n3 n( n& T! f V6 s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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1 z( v. c1 s1 N7 A8 u8 J隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗3 T! O' m; D, d+ @3 `
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vi /etc/yum.repos.d/CentOS-Base.repo
2 p1 J; C0 X$ H7 F: R2 s/ O冽敺乩誑銝閮剖嚗$ f# c$ @: C6 d; n" S/ e! F
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[atrpms]
% k5 O: }, i% C; Iname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
. `$ l! I! N( d! h+ vbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
1 h; U) o+ a5 Z* t( b0 jgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
1 A* f a0 v+ cgpgcheck=1
/ {+ D/ g! k) e" l1 K( penabled=1
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6 n7 H& j0 ~: |( [5 S: H. F) F2. 閮剖fail2ban
. T' [9 {: G# P* S銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf3 S5 D3 b5 N( E$ K4 J9 A w
vi /etc/fail2ban/fail2ban.conf
# ^7 N% N* X1 H d靽格 logtarget :
q4 k' z; o& N9 o9 U- #閮剔; W; g. W, A* Y" a& X& Y' r* \
- #logtarget = SYSLOG3 O3 q0 n" I. U* W0 _
- #隤踵游, P- W* A5 H% z7 _
- logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
' ?2 ?0 K2 H* A4 L$ t- #閮剔
l' ]; L/ B! j/ G3 {2 O+ _0 z - #backend = auto
5 {( L f9 S. H, D! A$ g - #隤踵游- H. h6 Y# \& [% c/ N
- 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: Y% I. {* V+ ]$ d) G$ t ?( s
- [ssh-iptables]2 l2 K! N! h `; ]/ _7 E6 r
- #臬血
. m# X: {! D+ M) {" h - enabled = true$ \0 Y3 \2 D) J1 t) X1 ]+ @
- #瞈曉蝔梧雿輻券閮剔喳
$ E, G% L& i9 g: q. } - filter = sshd
& {1 \6 ]; ?: o& w9 s5 [ - #iptables閮剖: ?, i5 Z3 M6 Z
- action = iptables[name=SSH, port=22022, protocol=tcp] _+ M) ^5 v+ j, I0 ]. m
- #潛餅撖靽∟身摰8 G6 c% g# m) g
- sendmail-whois[name=SSH, [email protected], [email protected]]
- t3 i f. h/ P" ]; B8 {* a3 ~
' w( \; G) A0 X9 @: a9 [* R9 s- #閬閮瑼: {$ D7 D, y8 o
- logpath = /var/log/secure
! L8 _2 `) v3 q. q! m$ ]# H - #擃閰阡航炊甈⊥: C: ^: [% S d* a$ P+ q
- maxretry = 2
0 [3 l6 d- a& g8 c - #餅嚗-1銵函內瘞訾餅5 y4 ]- V1 }; U. Q
- bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬; p9 e3 c+ \4 O' S. T& f6 I5 w
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
! R7 G6 E- @& m( ~+ K: ]/ |憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆$ h; l7 e% X; G( p" h( Q
vi /etc/init.d/fail2ban
: e( I" g0 K( I7 F p2 Y! e曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
# w) _& l1 m- n- start() {
A5 c8 W2 T# @8 ] - echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "
( t. k/ R; ~7 C: q. v& u - getpid
+ Z4 n2 B* P$ p7 \ - if [ -z "$pid" ]; then5 M2 v# q! y4 Z4 H' _
- rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban+ h4 `* m# T c5 ^
- $FAIL2BAN -x start > /dev/null( u: B4 W; c! T& O
- RETVAL=$?, l& {0 b. r# z6 S
- fi; {6 x' v! G* M: L) E
- if [ $RETVAL -eq 0 ]; then* Z! R( h3 T$ r+ M* g2 J5 q
- touch /var/lock/subsys/fail2ban4 {0 K! ~2 @; X8 m
- echo_success1 N: U1 D t3 `
- /sbin/service iptables restart # reloads previously banned ip's* C6 _3 g+ O0 f0 S
- else9 c+ j" g% s0 `& }
- echo_failure; K# C( a* b" v; r+ H
- fi
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- return $RETVAL
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銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗& o" n2 |* z" T( v
- stop() {
# X) y" I" O8 ^: Y - echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "3 s% z! k* D* {. W* m
- getpid/ ^1 t: M( F/ E
- RETVAL=$?
3 |6 g5 l% U) E9 u, N% [" A - if [ -n "$pid" ]; then' P+ B1 v2 J7 d- w
- /sbin/service iptables save # saves banned ip's
. ^. O( ]- a* _0 ^9 r) s" J; I& R. c - $FAIL2BAN stop > /dev/null* f: i- [) P# k0 q) [
- sleep 11 [; ]9 v9 O0 y. R- y) s
- getpid
! o7 G' z/ ^2 Z7 y# U - if [ -z "$pid" ]; then
% h' e7 {9 b# z) V5 \ - rm -f /var/lock/subsys/fail2ban
0 x" L: j1 T8 i7 D T k- I$ ] - echo_success$ J0 s, F. z7 X" j
- else; ]9 c" Y7 Z8 D0 a% m5 s
- echo_failure
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- else4 A2 H# L/ m) z9 _! _/ }* o& N( Y5 s5 d
- echo_failure! S# o/ f K2 V- F3 V8 a; Q
- fi
, a8 l% c6 F5 Y# |, o - echo
8 r: d1 ]. |) B J I( L - return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban
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4 p8 ]: F. y2 z3 G7 ]% H* O隞乩 :
6 p5 B: L) A9 S) s0 t" z) x/ g2 j: mhttp://blog.pulipuli.info/2011/07/centosfail2ban.html
: \# V: V; ~! Y& b* p6 ghttp://www.vixual.net/blog/archives/252 m4 [. `* X @$ I$ ]/ \; r
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