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
$ e! V" u( W( G4 K+ t; j4 b1.肘um摰鋆fail2ban0 b8 u& ~- N5 F
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)! l' R% X3 ~- U- O
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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0 N) D7 d. E* W+ M! ~
" q0 V! O a- L D' hyum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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vi /etc/yum.repos.d/CentOS-Base.repo
8 F: [2 J1 @# K/ t冽敺乩誑銝閮剖嚗
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[atrpms]
8 t5 N& Q9 S6 |* D# T# y, x" ^name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
5 L9 s/ {4 M% J U7 `+ dbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
4 t" Y* t/ N% O9 @/ I; f+ g6 P: bgpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
3 C% I8 F4 X# [gpgcheck=1
z f$ u; ]7 ~3 S. R, R0 I- I( o2 p+ ?enabled=1
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( W! z( K' F, R6 g) N+ r2. 閮剖fail2ban) w& t0 `" _$ o3 I: x
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf
1 z% k3 h' l, Vvi /etc/fail2ban/fail2ban.conf
! W$ o% ^: |- j) |8 n靽格 logtarget :
9 D2 \) w8 v( K5 H4 ?* Q7 _3 c# O- #閮剔
9 w2 |3 f; r) A( S+ ]4 f9 c - #logtarget = SYSLOG
4 }: m. j: P" ^' J6 v9 ~; t4 f* e5 Q - #隤踵游
# ?' b9 J9 z9 w, S - logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)# ^4 L# z4 {7 S- E% Q6 L. I- }
- #閮剔
- A4 y: W ]2 Y* d. } - #backend = auto ( m- ^ w4 L- n/ `: p. Q- m: H3 F% M
- #隤踵游7 ^7 \9 @6 [ ~( h( ~% ]# w$ l
- 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5 z3 r' Y- t. J, \
- [ssh-iptables]9 Z4 O l* R' E. e
- #臬血
, U" V0 [9 v+ H) t3 o \- Q* ?8 P - enabled = true
* y! O% R+ Z6 s+ _ - #瞈曉蝔梧雿輻券閮剔喳
d- i i! D" k9 p7 C! L" r - filter = sshd
2 U$ G/ P" |8 n* ~ - #iptables閮剖+ H. a5 n0 N: o% X0 I n2 d
- action = iptables[name=SSH, port=22022, protocol=tcp]
. |+ R" u- w1 P; W9 G; O( ~ - #潛餅撖靽∟身摰
2 N2 e+ o2 B @ - sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]" u0 Z# H8 H9 i( U, ~- P- k
3 `/ {: y8 T* p1 q; b$ V- #閬閮瑼: N6 [. G: C- @$ q z) R
- logpath = /var/log/secure
& U3 k4 Y) z5 O) E! } - #擃閰阡航炊甈⊥
7 m/ p: h) D- X% |, F6 T9 s3 G% b - maxretry = 2. C3 d. R+ X' T8 h% F! O) I3 d
- #餅嚗-1銵函內瘞訾餅* [' N R E1 M, C6 S& K
- bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬
1 h7 w" T( T, h7 ~% C' K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erver2 d/ P7 Q( ? N) `
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
( ~: D3 E1 D d vi /etc/init.d/fail2ban/ ]! l/ h' d/ Y, q7 _3 D
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
$ v# O t% y# e+ P! u# a1 V+ J- start() {* Q9 ~2 h0 R. R3 u! A1 F/ p
- echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "- I- J9 e6 {, W1 r; }
- getpid
, l1 @; g) w# i9 M5 ^$ Y, J - if [ -z "$pid" ]; then
1 A6 P1 q, _; Q* A( m" {. }! z - rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
. n8 @; j: S9 l - $FAIL2BAN -x start > /dev/null7 ^5 J. W `0 g7 c3 K9 f
- RETVAL=$?2 L0 m$ g! ]) [
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- if [ $RETVAL -eq 0 ]; then
) ?# k9 b% }) I7 x% d6 _ u - touch /var/lock/subsys/fail2ban8 I" K3 }8 W+ _' @ v
- echo_success
% v6 V0 S7 R& w7 b O - /sbin/service iptables restart # reloads previously banned ip's# {5 I. d* \! J! M, N g- R
- else
2 O. y5 k ^& Q; G& h - echo_failure/ c8 |2 _7 E% }- N! }
- fi
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- echo
0 Y. H: l& x. v; E9 \3 A2 Q& b$ O - return $RETVAL7 T5 m. w6 m! g% E) p7 o! O( a
- }
銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗5 O- x2 `. B+ Q4 v, U
- stop() {7 x% @2 T S* M' S
- echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "" R# T8 a+ ~6 B r1 m
- getpid! U0 n- e5 Q/ C% E" f" H; i+ S* \
- RETVAL=$?- |; O( c) p5 |& j4 K4 j2 m; ]
- if [ -n "$pid" ]; then2 m* U$ b7 k# n8 z$ a# ]
- /sbin/service iptables save # saves banned ip's' ? t8 D7 r/ O; W) a3 N9 [9 ]) z
- $FAIL2BAN stop > /dev/null6 y+ q9 ?# U. p/ I, ~9 Z
- sleep 1
* m, y' ]6 e) v - getpid
4 m# d0 B6 W Z' G+ U) v7 Z - if [ -z "$pid" ]; then- b: C; v" Q0 x2 j
- rm -f /var/lock/subsys/fail2ban0 K' ~8 |7 q3 b L3 c# u4 ~
- echo_success
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- echo_failure
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- else
5 B: u; c" K2 B% M8 ^ - echo_failure
- K4 o" |3 P0 ], Y, D# g3 q& v - fi5 Z! ^% }. U# ~* `, {' f
- echo& E R) n8 I' C* ]6 J, i$ @+ c
- return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨
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chkconfig --add fail2ban7 k. [+ V( a1 r2 R* Q$ z
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隞乩 :
0 v# h) w! p1 H4 b3 e- e+ qhttp://blog.pulipuli.info/2011/07/centosfail2ban.html ' P5 B, Q! v. T. f! X" s
http://www.vixual.net/blog/archives/252
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