system maintenance note(2005-02-02)#1 [Linux] Brute Force 攻撃防御 インターãƒãƒƒãƒˆã«ã‚µãƒ¼ãƒã‚’æ™’ã—ã¦ã„ã‚‹ã¨ã€å½“然ã®ã“ã¨ãªãŒã‚‰æ”»æ’ƒã‚’å—ã‘ã‚‹ã‚ã‘ã§ã€sshd å‘ã‘ã«çµ¨æ¯¯çˆ†æ’ƒã—ã‹ã‘ã¦ãる連ä¸ã‚’排除ã™ã¹ãã€ã¡ã‚‡ã£ã¨ã—ãŸã‚¹ã‚¯ãƒªãƒ—トを書ã„ã¦ä»•æŽ›ã‘ã¾ã—ãŸã€‚ #!/usr/bin/perl $LogDir="/var/log"; $MsgFile="secure"; $DenyCnf="/etc/hosts.deny"; $Pattern="^([A-Z][a-z][a-z]) ([ 0-9][0-9]) ([0-9][0-9]:[0-9][0-9]:[0-9][0-9]) .+ sshd\[[0-9]+\]: Failed password for illegal user ([^\S]+) from ([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)"; $fsdev=0; $ino =1; $mod
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