隞乩:
8 O: o$ r! }& E+ v Shttp://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts) Z1 D- M# F# E/ i+ ]& K. A
http://www.cnblogs.com/taosim/articles/3134394.html
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1) /etc/ssh/sshd_config乩銝銵# k8 W0 ?8 _; f+ D4 o- y4 o
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2) 券脩怎乩閬+ `$ F" _/ T3 j
- iptables -N SSHATTACK; O- ?8 S; h7 r. U3 T& H( g2 I
- iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7; \$ \2 p$ A6 P$ q% d
- iptables -A SSHATTACK -j DROP
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3) /var/log/syslog 閫撖航賜ssh餅
6 k3 d* O- j9 V$ p) |0 I- Dec 27 18:01:58 ubuntu kernel: [ 510.007570] Possible SSH attack! IN=eth0 OUT= MAC=01:2c:18:47:43:2d:10:c0:31:4d:11:ac:f8:01 SRC=192.168.203.129 DST=192.168.203.128 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=30948 DF PROTO=TCP SPT=53272 DPT=1785 WINDOW=14600 RES=0x00 SYN URGP=0
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潸” 2016-4-15 12:34:32
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