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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
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- iptables -N SSHATTACK6 B$ w4 Z# A- ^/ x
- iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7
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3) /var/log/syslog 閫撖航賜ssh餅4 d! H% @# ?3 x
- 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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潸” 2016-4-15 12:34:32
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