ET INFO Microsoft Connection Test

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/connecttest.txt"; bsize:16;
http.host;
content:"www.msftconnecttest.com"; bsize:23; fast_pattern;
Raw source ET INFO Microsoft Connection Test · 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 http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO Microsoft Connection Test";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/connecttest.txt"; bsize:16;
    http.host;
    content:"www.msftconnecttest.com"; bsize:23; fast_pattern;
    reference:url,learn.microsoft.com/en-us/troubleshoot/windows-client/networking/internet-explorer-edge-open-connect-corporate-public-network;
    classtype:misc-activity;
    sid:2031071; rev:4;
    metadata:created_at 2020_10_21, performance_impact Low, confidence High, signature_severity Informational, updated_at 2022_12_01;
)

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