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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∪
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http://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts
4 G" y" I  A4 o! R& Yhttp://www.cnblogs.com/taosim/articles/3134394.html
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( m4 {/ D* [0 r2 p$ ]% S1) /etc/ssh/sshd_config乩銝銵# y0 V' m, x1 S( d% U2 Z4 w) Y
  1. MaxAuthTries 1
銴鋆賭誨蝣

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  1. iptables -N SSHATTACK6 ]+ b5 D1 O' g! c
  2. iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7: K+ D$ j% h2 O* l5 Y8 z+ p1 V
  3. iptables -A SSHATTACK -j DROP
銴鋆賭誨蝣
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3) /var/log/syslog 閫撖航賜ssh餅
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  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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