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! C2 _( ]$ ` P; f
1.肘um摰鋆fail2ban
3 Q+ M( ?9 v7 q' e; eyum -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), d1 t# N7 X& G9 f* p( g1 t% s' B
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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7 E$ u8 g; U% x! Z
$ N4 O8 s e- dvi /etc/yum.repos.d/CentOS-Base.repo
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. o1 [7 S B2 s- s* T[atrpms]
$ J4 q0 j% J+ _) K' O/ D9 p" Mname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms% D2 i: I( y# R" `. n! b
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
8 C% ~. j, X# ?& ~# w; ngpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
( N" z& d) r7 ^9 o" |gpgcheck=1# l; j8 ^' j* t' z
enabled=1
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2. 閮剖fail2ban
# r D1 d2 d2 `9 y銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf( P% ~1 {7 H7 H& D7 ?5 _2 u; L* J
vi /etc/fail2ban/fail2ban.conf: `1 e k5 F- k; l3 W
靽格 logtarget :# _ K3 \8 I2 b5 @
- #閮剔
6 g/ Q. d7 b( L0 s - #logtarget = SYSLOG K. w3 z: t8 ]! J# v3 b; {
- #隤踵游) D/ t% T" {5 y9 G& X% @4 F
- logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
8 [! n# {! x, L: ]6 z- #閮剔
2 A& _; V3 ~4 b, j - #backend = auto
: j* o4 g9 ~, W - #隤踵游
% v# b- o' U$ 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
4 a: ]% w8 L1 L5 A- [ssh-iptables]
2 O% o* n- e% A- }# @/ v - #臬血
4 S; F) v/ u. C' m* f$ C; I5 H - enabled = true
0 G# l* K3 z/ P6 X - #瞈曉蝔梧雿輻券閮剔喳( Y2 l0 w" N) T- r
- filter = sshd+ c8 k; [) F0 p% D) d2 I: t
- #iptables閮剖. k8 N0 n/ g: i0 a) F* ~
- action = iptables[name=SSH, port=22022, protocol=tcp]6 n8 a. X9 F4 ?( P& [2 h/ X; I
- #潛餅撖靽∟身摰
2 i) f& K4 D) M2 k - sendmail-whois[name=SSH, [email protected], [email protected]]
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- #閬閮瑼
7 R, _; T# @+ ]/ _* F - logpath = /var/log/secure* ?0 N9 i( ~* B( |2 Y
- #擃閰阡航炊甈⊥, I6 U% s. t: m) J
- maxretry = 2
; h, \3 j2 i- Y - #餅嚗-1銵函內瘞訾餅# \+ C3 I: e0 M
- bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬
: Z i& ^+ o$ a! m$ ?3 G2 `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erver0 J8 R' P% r! E0 R
憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆6 h( j6 E& | b' s( @" L- w2 m
vi /etc/init.d/fail2ban
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- start() {
) F7 o( v, U& L2 f - echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "7 T: k7 ^9 G' j( @
- getpid
, ?1 h' B& `, U - if [ -z "$pid" ]; then; c" X8 d$ s! Y1 R, D& s9 [; L9 T
- rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban
0 t( v* |1 b. C% k& k) ` - $FAIL2BAN -x start > /dev/null
, p; i4 L, d: u" L$ y C - RETVAL=$?" U+ Y& b! y/ @3 x6 a" j& D ~4 e
- fi
( W1 w5 O, s3 A" f' T - if [ $RETVAL -eq 0 ]; then# i# l& m" F- G! ^6 `4 ]
- touch /var/lock/subsys/fail2ban
6 b" g/ [3 p2 f - echo_success, {1 p9 y8 q( v4 d, N4 Q- z5 w! ?
- /sbin/service iptables restart # reloads previously banned ip's
: e4 a& b- r% ^4 r4 t; K - else
: ^, O& S: ^8 ]* Q$ b( u- V { - echo_failure$ {0 [% W" J( p$ j. f/ ^
- fi$ _5 C. I. _& U0 }( i. s
! B3 G6 S& X5 K5 A; y- echo
1 a, z8 R7 m1 A, x; d$ u8 m - return $RETVAL) N( V* F% ]- R6 L
- }
銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗
) M8 Q3 S' S4 l% y- _ c; L- stop() {
7 e( E4 k5 Y, ~6 g, u8 { - echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "4 v0 x; _. W( |+ r
- getpid) g$ r# U2 E$ P4 j7 }" R8 I6 i
- RETVAL=$?
: y$ S+ X! g" W, a5 F; |. f - if [ -n "$pid" ]; then
H5 p# C" f0 x* N8 T - /sbin/service iptables save # saves banned ip's: k1 u' H- P- [8 { ?$ X9 n5 x" U
- $FAIL2BAN stop > /dev/null) _) \3 D- h8 |9 l) R
- sleep 1
- H4 K2 A- S+ f2 ]! H: t+ w' j - getpid2 q2 W$ Y& w- V/ r
- if [ -z "$pid" ]; then
" [. x8 o6 ~ l& X - rm -f /var/lock/subsys/fail2ban
# t, D' s. I: S" v5 Q( @ - echo_success% ]9 V1 R! I0 R5 o# X1 c
- else
# K9 |5 M3 a* U7 i1 k& E9 V - echo_failure
# z4 H K0 H% w5 R) A - fi
" `! G; L4 ~+ `1 ?: q - else w& I3 [/ a3 ]- B3 A
- echo_failure
; S3 A$ F) [9 w) S - fi
/ V" `; s1 C/ q, L7 Y4 Y8 m - echo0 G# {, d' q1 T! C
- return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨0 Y* l V0 I- @3 E7 Y
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chkconfig --add fail2ban. ~6 u2 x) Z0 ~% b! V
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1 L4 [5 ^# }9 W" _" y. `* y) chttp://blog.pulipuli.info/2011/07/centosfail2ban.html ' b5 X+ o1 [! L; e7 W5 Z7 u
http://www.vixual.net/blog/archives/252
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