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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 |甇摨閬 |梯璅∪
隞乩:
/ {0 y0 z( P& }: b4 h8 xhttp://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts9 l. x/ ~. y$ {" p; G3 @
http://www.cnblogs.com/taosim/articles/3134394.html, Y* x" H. `$ E4 |

$ V) |% Z; Z* N5 H$ p* ~3 D- ~0 K1) /etc/ssh/sshd_config乩銝銵
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  1. MaxAuthTries 1
銴鋆賭誨蝣
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) s8 F; B: O7 S. Z; m4 y2) 券脩怎乩閬" Q( I: ?$ M4 p' R3 u: |$ C% C9 q
  1. iptables -N SSHATTACK
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  2. iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7
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  3. iptables -A SSHATTACK -j DROP
銴鋆賭誨蝣

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5 l" v1 Z5 P8 X% R2 r3) /var/log/syslog 閫撖航賜ssh餅0 r) f8 h) v0 K. K: b6 U
  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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