ET SCAN Port Unreachable Response to Xprobe2 OS Fingerprint Scan

Query · suricata

itype:3;
dsize:>69;
content:"securityfocus";
content:"securityfocus"; distance:50; within:15;
Raw source ET SCAN Port Unreachable Response to Xprobe2 OS Fingerprint Scan · 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 icmp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET SCAN Port Unreachable Response to Xprobe2 OS Fingerprint Scan";
    itype:3;
    dsize:>69;
    content:"securityfocus";
    content:"securityfocus"; distance:50; within:15;
    reference:url,xprobe.sourceforge.net/;
    classtype:attempted-recon;
    sid:2009298; rev:3;
    metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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