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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:
: G* Z( o7 J* d/ V3 i) M7 ~http://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts
% w( s8 |8 k; l5 _http://www.cnblogs.com/taosim/articles/3134394.html  c0 d/ R- U8 b7 r5 v9 k1 T

2 f! Q, a- \1 g- t9 n8 Y1) /etc/ssh/sshd_config乩銝銵
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  1. MaxAuthTries 1
銴鋆賭誨蝣

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  1. iptables -N SSHATTACK4 j/ d+ {/ j2 U1 _8 U% S
  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  c8 q  Q0 }3) /var/log/syslog 閫撖航賜ssh餅4 Y" k8 o. }$ c7 f3 b
  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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