砍敺 IT_man 2016-4-9 22:36 蝺刻摩 X9 w. c' U# M; A
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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3 R$ I& }' j8 @# D
1.肘um摰鋆fail2ban/ r! \' D3 p3 n$ @$ X- t6 ~3 _4 V
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)2 y& K0 q1 h* x$ j7 }1 O3 @# Z9 N
! P8 s1 }/ W% h4 p# h* P3 Y8 k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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( Z* X9 g6 i" [/ r& ^: I- Iyum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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5 Z& Q! w9 e* Q% h隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗9 E0 |8 Q- n- J' Q( q# X0 \
; U- E% S% U' K4 Qvi /etc/yum.repos.d/CentOS-Base.repo
9 ]7 L9 |+ O9 G冽敺乩誑銝閮剖嚗. n; @6 B5 R8 ~, Q+ |
' F( b) `( [: |! f6 E( F[atrpms]
4 J1 ^$ Y% ~) D* ?name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
) N1 O5 R- Y3 R6 ^% f! Obaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable o& P+ M% ]% |' `- S+ M
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms7 i0 @0 e- C, h1 F, Q
gpgcheck=1* B& U* ~4 p+ a0 x' t$ p8 U( I
enabled=1! X. Z* u4 ]& x% o
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2. 閮剖fail2ban
2 l) j- c+ E K( U1 `) C5 z, M( |銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf* }# @9 a9 }. B( c+ A# G3 t
vi /etc/fail2ban/fail2ban.conf
7 I# j _( ?; n! P靽格 logtarget :, J0 Q, n1 d- h: P
- #閮剔
# |) L& F) M7 z% H" ~2 V4 n - #logtarget = SYSLOG# Z$ c7 F# d6 L: j! C9 N( W
- #隤踵游/ X% t' Y+ b$ c; k4 a2 h" i
- logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼); M+ r* d4 v; n) N; W
- #閮剔
# `- h) U6 f, |* a! v4 s - #backend = auto
8 K% {- c( Q$ e3 b( ] - #隤踵游
D$ M6 m" I. 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: E; ] a$ x. X6 x& l- q
- [ssh-iptables]
; n v) h- w! x. R) l6 ?: N - #臬血
3 l7 Q- b. e& y$ o5 T' S4 s2 V - enabled = true
' e3 v, D) |7 @ - #瞈曉蝔梧雿輻券閮剔喳5 |8 f" U# B3 m1 ^' V
- filter = sshd5 d; V; v! }) ?' y1 j7 B+ `
- #iptables閮剖9 K4 C. Q# j5 P& U
- action = iptables[name=SSH, port=22022, protocol=tcp]* _1 M; Q! m6 E8 Q* k E, q% c4 q' B
- #潛餅撖靽∟身摰& x2 s7 h. E m5 w
- sendmail-whois[name=SSH, [email protected], [email protected]]
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- #閬閮瑼6 z) x# ?8 g8 k6 ]. }2 j
- logpath = /var/log/secure
- e2 u* x: ~0 O+ K* [2 ~ - #擃閰阡航炊甈⊥
+ e* a) f( N6 D: d9 l - maxretry = 2
! _6 w4 o9 U8 |" G! y& z2 i - #餅嚗-1銵函內瘞訾餅' C, ?- P: d7 e& H! g
- bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬 X* Y' Z. l- j. a8 q
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
; }! Q7 X3 K$ ]( K# p6 s" d憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
& ?4 X2 t" Z# s v/ D3 s vi /etc/init.d/fail2ban% y E6 S( z+ Z; F4 {4 n
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
$ F8 V3 x; B8 b/ m1 O" w6 O l- start() {
* ?' n* v2 W% Q" V H2 A - echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "
1 y# ?! A" {, @" ^ - getpid
8 k" ^. n4 M; x" h+ f- G - if [ -z "$pid" ]; then6 t5 w3 Q4 B! G& E9 H5 v& _
- rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban$ D; o0 q' Q4 T& _7 x7 H( H
- $FAIL2BAN -x start > /dev/null
/ P9 N4 Y5 O3 z) U0 C - RETVAL=$?
8 ~1 E0 M/ p0 ~4 L* h9 B7 l - fi
! W* j+ p1 h! ? K; w* [/ {: w7 h - if [ $RETVAL -eq 0 ]; then. S' H7 R% F; Y2 n: y
- touch /var/lock/subsys/fail2ban- f7 q1 g$ C8 p# Y) P
- echo_success
- B p4 H! E# H# V/ U+ i0 } - /sbin/service iptables restart # reloads previously banned ip's
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- echo_failure" ~0 P' f% _8 [7 _5 \2 H9 s
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- return $RETVAL% M* E8 p0 D* x; N( N1 K+ y
- }
銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗
; M" |1 `9 K- J9 S% J- stop() {, M' B, o& h+ o& B2 |. d
- echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "
% M) z- o8 c3 F1 K& k" P3 u; u - getpid
% a' o; p( d; n5 q/ Z - RETVAL=$?6 e# z/ H1 `5 G* }& w% q9 ]
- if [ -n "$pid" ]; then1 J, b, m8 T- w4 J: @
- /sbin/service iptables save # saves banned ip's
7 I% r; P) o3 y$ ]6 A - $FAIL2BAN stop > /dev/null
; d- x+ o! B6 S6 k: t7 S3 [ - sleep 1
0 |4 _% d% G" j7 ^# W( u$ i - getpid7 `& b/ j; u- q" {* w7 n
- if [ -z "$pid" ]; then7 u, F k! P! M
- rm -f /var/lock/subsys/fail2ban
6 }( m* [) g/ N. B# Q( y8 G& g6 r - echo_success
" ~" H" y5 I% l l/ a; x$ B - else; u' ?9 b( q1 N
- echo_failure6 D1 e) H/ G* a9 \) C2 O
- fi
. N2 Z1 R" O5 q/ x5 w5 i - else
. B- D6 `$ Z3 l& A# w - echo_failure0 Z- e0 g$ B" t) d; d- {7 s
- fi0 x* f" Q2 Q1 J7 N7 w( b
- echo
+ E3 d; _) Z2 y0 Z, G/ X! l - return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨
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. Z, y+ c* A6 _chkconfig --add fail2ban8 B7 I' E4 k) u3 i3 q
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http://blog.pulipuli.info/2011/07/centosfail2ban.html
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