砍敺 IT_man 2016-4-9 22:36 蝺刻摩 4 k) [7 P+ Y" R) ?: J$ f6 {, T
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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6 H9 i4 a) p0 Q+ d( k; i. n( N
1.肘um摰鋆fail2ban w y, w4 S8 H
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)5 \* Y. U5 {- p: K
: l I5 ^/ V! W( C- f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- v& k1 h3 Y9 v9 _! {- W
* Q" `8 _8 o: Z. \" W$ ~3 ^/ u* tyum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atrpms1 R; O+ K9 E! \7 e5 Y2 R* L2 C3 m% Z
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隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗
% K0 B0 h+ H( B, Q' g; s* b' H( [7 N4 H- y- P/ v
vi /etc/yum.repos.d/CentOS-Base.repo5 ^+ S: x5 R0 b5 s: i! N
冽敺乩誑銝閮剖嚗+ a) Z2 u. H8 t; ]; \) W- ?
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[atrpms]
9 C3 `0 n5 ^% |* O! s' I# uname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
7 z O5 Y% ]9 m( xbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
8 x R% \! J! F: ?8 a; |% Ogpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
; S4 L) P W9 Q- Y5 ugpgcheck=1
: C" ~9 T$ W2 i7 `1 I2 e0 u" ^enabled=1& O8 N+ f' T8 U% J2 u* e
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2. 閮剖fail2ban
3 ]0 T/ s0 s$ s& q! l# @ M, E銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf% F7 C1 l# b- {& b" k* T+ x2 u, b1 z
vi /etc/fail2ban/fail2ban.conf! [( D) g- }$ }
靽格 logtarget :9 x7 j; ?( }# C6 X- U6 _6 i
- #閮剔
4 z( z! _! ?+ M - #logtarget = SYSLOG
. ]1 d0 M9 P7 m* I `8 g" e - #隤踵游
# u4 E. ^( ?3 a1 D' z \ - logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣 vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
& s+ Y; s |" b; j$ s5 y! x! W- #閮剔/ n3 R L2 z: v4 B- K) v4 B3 g" T1 C9 [
- #backend = auto
8 _3 P! b& t2 ^! \7 j. ]# K - #隤踵游
# c8 O. M9 P/ E2 J4 E" l$ Q - 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
: J! o3 S" O. ^' i! N7 V3 e5 v- [ssh-iptables]. y% K0 I/ m, {8 s+ @8 K
- #臬血
) [- r8 s3 w3 s. B* F: Y - enabled = true
3 s( V ^" B7 A5 x* \7 Y - #瞈曉蝔梧雿輻券閮剔喳4 A) y( f7 V5 n* ?
- filter = sshd) j) V" t2 W7 p. W
- #iptables閮剖 y, a6 A% c* t. n( X b
- action = iptables[name=SSH, port=22022, protocol=tcp]
9 [; y/ o( Q8 K& w - #潛餅撖靽∟身摰$ q) |/ l7 q" @* K0 O0 j
- sendmail-whois[name=SSH, [email protected], [email protected]]; D7 l) a: n- V2 j: P3 y
% J) i9 O& X" S, {" j- #閬閮瑼
3 ]5 e( N3 C3 {- B' R! y6 z) | - logpath = /var/log/secure
{1 ]$ W- w6 _4 z' E7 t - #擃閰阡航炊甈⊥
4 U0 q: K( ~. Q5 [6 g, b# A2 V - maxretry = 2
9 b9 e$ K' h% w* Q( \ - #餅嚗-1銵函內瘞訾餅
9 m: R) Q# V/ f( Z1 u( O Z! d P) X" X - bantime = -1
銴鋆賭誨蝣 霈fail2ban啣銝閮剝餅IP閬
5 y8 \0 X& o* Y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
. \6 T! e9 S1 T5 ?憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆2 t& B4 a- w* i" k% g9 j
vi /etc/init.d/fail2ban% Q4 U/ L5 f5 r
曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗/ A9 B s; g4 {* e, {
- start() {
) l3 @6 v2 O# u - echo -n [ DISCUZ_CODE_3 ]quot;Starting fail2ban: "
& B+ j1 P8 {' O W; d; g2 d$ s - getpid, J; h# z6 c7 p3 E' c; t6 B
- if [ -z "$pid" ]; then
: Q$ Z) e7 q: ]3 Z1 W1 J4 I7 B - rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban; O/ z/ i/ c% P+ D
- $FAIL2BAN -x start > /dev/null& B* Z' |; T+ f! q% |' T
- RETVAL=$?
7 S' Y& g: E9 m5 D' l2 Q - fi
3 t! X* X7 Y/ O% ^$ s - if [ $RETVAL -eq 0 ]; then
* c2 m* w! S; q/ D# ~; c% ?% e - touch /var/lock/subsys/fail2ban
& q4 \+ f- \7 |: K8 \, s' x! u - echo_success" `9 |7 P: r& ]# c* w7 x8 X
- /sbin/service iptables restart # reloads previously banned ip's' @" v% x) n7 }
- else i+ h& n! J7 Q$ f' d9 b# v
- echo_failure
7 @% c: ?) ]' y# p - fi
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- echo# \) c: ]3 ^6 _& _8 \7 X% Z
- return $RETVAL8 j6 D4 ?$ P6 ~
- }
銴鋆賭誨蝣 曉酒top()憛嚗乩誑銝#閮餉圾閮剖嚗
4 D* ^. Q" X% N' o$ ?2 X+ ?- stop() {
0 Y, `) s( y0 Z D - echo -n [ DISCUZ_CODE_4 ]quot;Stopping fail2ban: "5 X8 u( A; [0 \) F4 Q1 u! W; k; C
- getpid
0 P, g4 i' Y# @ - RETVAL=$?8 n, i# U' R0 y0 s3 ] }
- if [ -n "$pid" ]; then. u3 z* Y( A o$ L# E
- /sbin/service iptables save # saves banned ip's2 K: `' D* ?" M( d
- $FAIL2BAN stop > /dev/null
1 f; e* S. y! ]+ D5 F8 a% ?( x - sleep 1
t8 [6 S5 X1 a7 V! q; u6 \' Y - getpid8 p' j& ~9 ~. d5 a2 V
- if [ -z "$pid" ]; then$ }2 B) K% m7 Y1 O) H( y4 \' y* R$ w
- rm -f /var/lock/subsys/fail2ban+ i- C+ s& R) R: X+ J( ~, W! n
- echo_success. G- g) ?! O( @, X9 n7 l |
- else
r$ v* ?7 n1 }, r- V+ q9 g - echo_failure, m. z7 _/ l$ K( ]; g
- fi6 S0 i' k: [. M* ?/ \
- else
3 d( n* b# |, Y% ] V - echo_failure8 C: L* G: r( f) H
- fi
- H9 x: b5 a( t* `1 X& ?, K - echo- m* C+ {9 Q5 k: Y
- return $RETVAL
銴鋆賭誨蝣 3. 閮剖fail2ban璈摨3 N9 R, ]2 k9 w) h4 P, f
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chkconfig --add fail2ban
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' _3 j" y% V; z隞乩 :
: D6 x- D7 O9 s5 L6 U! chttp://blog.pulipuli.info/2011/07/centosfail2ban.html - H: h4 d5 R% ~" }, {* h! W* @5 U
http://www.vixual.net/blog/archives/252
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