alert udp $EXTERNAL_NET any -> $HOME_NET 5060 (msg:"ET SCAN Voiper Toolkit Torturer Scan"; content:"interesting-Method"; content:"sip|3a|1_unusual.URI"; content:"to-be!sure"; offset:20; depth:60; reference:url,sourceforge.net/projects/voiper; classtype:attempted-recon; sid:2008568; rev:3; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)