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[脩怎] 脫餅撟曄車寞

[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:
( A7 [+ [0 A/ u* s8 thttp://serverfault.com/questions/275669/ssh-sshd-how-do-i-set-max-login-attempts
4 t/ F8 Z' J/ c% @0 r* }6 g! ]0 Y* e& rhttp://www.cnblogs.com/taosim/articles/3134394.html) G) s2 g7 x8 b" A9 [, {) H( G- B

& f  j' j0 y# z( ]  Z+ C: _5 g1) /etc/ssh/sshd_config乩銝銵
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  1. MaxAuthTries 1
銴鋆賭誨蝣
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( \6 A( X7 j4 r3 G% I7 @! G% ]2) 券脩怎乩閬) N2 k6 {& {4 z( _' T5 B5 d) P
  1. iptables -N SSHATTACK
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  2. iptables -A SSHATTACK -j LOG --log-prefix "Possible SSH attack! " --log-level 7. l  X4 @5 _6 l+ E7 _' x
  3. iptables -A SSHATTACK -j DROP
銴鋆賭誨蝣

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3) /var/log/syslog 閫撖航賜ssh餅
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  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
銴鋆賭誨蝣

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