alert udp $HOME_NET 1024:65535 -> $EXTERNAL_NET 1024:65535 (msg:"ET P2P eMule KAD Network Connection Request"; dsize:35; content:"|e4 21|"; depth:2; threshold:type limit, count 1, seconds 300, track by_src; reference:url,emule-project.net; classtype:policy-violation; sid:2009967; rev:5; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2019_07_26;)