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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:6 q4 a% \/ V. U+ S6 C# q( S
http://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts
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1) /etc/ssh/sshd_config乩銝銵% q: I' d/ a: P0 g& w
  1. MaxAuthTries 1
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2) 券脩怎乩閬: w9 }# Q& b$ A
  1. iptables -N SSHATTACK. `, ^& u8 y3 V: s$ d
  2. iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 79 W8 C; G" y" b0 L- w: B
  3. iptables -A SSHATTACK -j DROP
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3) /var/log/syslog 閫撖航賜ssh餅# e9 g$ r9 n( k0 C
  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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