隞乩:
7 U: z% I, ?' V! w: f7 chttp://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts
3 F1 a1 v+ S: E/ S d) |# Yhttp://www.cnblogs.com/taosim/articles/3134394.html, w$ _' g- e$ ~7 r2 N
- L* M9 v6 f" X, E, o1) /etc/ssh/sshd_config乩銝銵5 g' B3 S) l4 K ^. J$ B' e- K2 v
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2) 券脩怎乩閬+ F& x9 Y. N6 P" J" ?7 Y! B% K
- iptables -N SSHATTACK$ V- C* I. z4 @9 y) _
- iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7
- V2 t/ d5 m G - iptables -A SSHATTACK -j DROP
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+ j- A; C/ u' D* ?, E* t' \- k3) /var/log/syslog 閫撖航賜ssh餅
' k+ Y2 G# _ C {% g- 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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