ET SNMP missing community string attempt 1

Query · suricata

content:"|30|"; depth:1;
byte_test:1,!&,0x80,0,relative,big;
content:"|02|"; distance:1; within:1;
byte_test:1,!&,0x80,0,relative,big;
byte_jump:1,0,relative;
content:"|04 00|"; within:2;
Raw source ET SNMP missing community string attempt 1 · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp $EXTERNAL_NET any -> $HOME_NET 161 (
    msg:"ET SNMP missing community string attempt 1";
    content:"|30|"; depth:1;
    byte_test:1,!&,0x80,0,relative,big;
    content:"|02|"; distance:1; within:1;
    byte_test:1,!&,0x80,0,relative,big;
    byte_jump:1,0,relative;
    content:"|04 00|"; within:2;
    reference:bugtraq,2112;
    reference:cve,1999-0517;
    classtype:misc-attack;
    sid:2016178; rev:2;
    metadata:created_at 2013_01_09, cve CVE_1999_0517, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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