CONTENTS #contents ---- Lastmodified &lastmod; ---- *NTP-Reflection Attacks [#k9a38ccb] Open NTP Server の Reflection& http://nakacya.wordpress.com/type/aside/ #ref(20140214_NTP_Atack.PNG) 13:54:15.072076 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072079 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072081 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072084 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072086 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072089 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072091 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072094 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072097 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072099 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072101 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072104 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072106 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072109 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072111 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 13:54:15.072114 IP g7.kuji-clinic.net.ntp > www162.sedoparking.com.http: NTPv2, Reserved, length 440 /etc/ntp.conf を server ntp.jst.mfeed.ad.jp server 0.freebsd.pool.ntp.org iburst maxpoll 9 server 1.freebsd.pool.ntp.org iburst maxpoll 9 server 2.freebsd.pool.ntp.org iburst maxpoll 9 から、 restrict default ignore restrict 0.pool.ntp.org nomodify nopeer noquery notrap restrict 1.pool.ntp.org nomodify nopeer noquery notrap restrict 2.pool.ntp.org nomodify nopeer noquery notrap restrict 127.0.0.1 restrict -6 ::1 restrict 127.127.1.0 へ変更して service ntpd restart ---- Total access &counter(total);:本日 &counter(today);:昨日 &counter(yesterday); #counter([total|today|yesterday]);