alert tcp $EXTERNAL_NET any -> $HOME_NET 1723 (msg:"GPL POLICY PPTP Start Control Request attempt"; flow:to_server,established,no_stream; content:"|00 01|"; depth:2; offset:2; content:"|00 01|"; depth:2; offset:8; classtype:attempted-admin; sid:2102044; rev:6; metadata:created_at 2010_09_23, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)