隞乩:
# ]5 r& C- d& Y8 f: mhttp://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts3 L' o4 x# F9 S' G; h0 p6 a6 \ i+ J
http://www.cnblogs.com/taosim/articles/3134394.html
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7 y4 v/ U1 l' D# Q' ~1) /etc/ssh/sshd_config乩銝銵$ U) P6 {7 o5 L6 v( ~5 x7 k, P
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2) 券脩怎乩閬5 G0 o/ Q# t5 t! n
- iptables -N SSHATTACK, A6 H2 y+ n; G3 v& {3 z
- iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7
6 i# w; r: n5 e - iptables -A SSHATTACK -j DROP
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3) /var/log/syslog 閫撖航賜ssh餅7 b! l% i. y$ V9 G1 M( K
- 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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鈭
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