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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 |摨閬 |梯璅∪
隞乩:- ]- @: c0 B, Y' |" S
http://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts; Y* Z' E( p1 q9 d; p
http://www.cnblogs.com/taosim/articles/3134394.html. t2 b- I, Z  f0 R7 g# E
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1) /etc/ssh/sshd_config乩銝銵. |! d% d) V5 g  O. ?* W
  1. MaxAuthTries 1
銴鋆賭誨蝣
$ s& a3 C1 B; [! a" Y+ }4 ]

  V& Q1 C% a; y* P) o2) 券脩怎乩閬# h# p+ U5 j& f2 U! j: u+ x+ X! i
  1. iptables -N SSHATTACK* U5 I3 ]% n, j
  2. iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7
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  3. iptables -A SSHATTACK -j DROP
銴鋆賭誨蝣
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) H) S* C9 _- I, ~2 e0 p: x2 z3) /var/log/syslog 閫撖航賜ssh餅
$ @9 J( n9 @& _
  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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