ET DOS Possible NTP DDoS Multiple MON_LIST Seq 0 Response Spanning Multiple Packets IMPL 0x03
Sourceet/open
CreatedJanuary 3, 2014
UpdatedJuly 26, 2019
Classificationattempted-dos
alert udp $HOME_NET 123 -> $EXTERNAL_NET any (msg:"ET DOS Possible NTP DDoS Multiple MON_LIST Seq 0 Response Spanning Multiple Packets IMPL 0x03"; content:"|00 03 2a|"; offset:1; depth:3; byte_test:1,&,128,0; byte_test:1,&,64,0; byte_test:1,&,4,0; byte_test:1,&,2,0; byte_test:1,&,1,0; threshold:type both,track by_src,count 2,seconds 60; reference:url,www.symantec.com/connect/blogs/hackers-spend-christmas-break-launching-large-scale-ntp-reflection-attacks; classtype:attempted-dos; sid:2017921; rev:2; metadata:created_at 2014_01_03, confidence Medium, signature_severity Major, updated_at 2019_07_26;)
References
Metadata
created at2014_01_03
confidenceMedium
signature severityMajor
updated at2019_07_26
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