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[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2016-4-15 12:34:32 | 芰閰脖 撣 |甇摨閬 |梯璅∪
隞乩:: O: C+ m* F+ l) u/ L  s
http://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts
' [# U- e! w* [; e! U1 thttp://www.cnblogs.com/taosim/articles/3134394.html
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, v) I, B1 ]% t$ Q1) /etc/ssh/sshd_config乩銝銵& U: T  p0 p; u2 h, I" o% N
  1. MaxAuthTries 1
銴鋆賭誨蝣
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$ r  D5 b4 z& `" f: H2) 券脩怎乩閬+ b% B6 ~$ _2 W9 I* D
  1. iptables -N SSHATTACK
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  2. iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7
    ) d0 _# |6 B* `0 d: ]$ x
  3. iptables -A SSHATTACK -j DROP
銴鋆賭誨蝣
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9 |5 q4 O* Q3 w9 X$ Q/ {3) /var/log/syslog 閫撖航賜ssh餅! L* J% a" I0 W; g; I3 e/ y
  1. 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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