ET POLICY PPTP Requester is not authorized to establish a command channel

Query · suricata

flow:to_client,established,no_stream;
content:"|00 01|"; offset:2; depth:4;
content:"|00 02|"; offset:8; depth:10;
content:"|04|"; offset:12; depth:13;
Raw source ET POLICY PPTP Requester is not authorized to establish a command channel · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET 1723 -> $EXTERNAL_NET any (
    msg:"ET POLICY PPTP Requester is not authorized to establish a command channel";
    flow:to_client,established,no_stream;
    content:"|00 01|"; offset:2; depth:4;
    content:"|00 02|"; offset:8; depth:10;
    content:"|04|"; offset:12; depth:13;
    reference:url,tools.ietf.org/html/rfc2637;
    reference:url,lists.emergingthreats.net/pipermail/emerging-sigs/2009-June/002705.html;
    classtype:attempted-admin;
    sid:2009387; rev:4;
    metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2019_07_26;
)

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