alert udp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET P2P BitTorrent DHT announce_peers request"; content:"d1|3a|ad2|3a|id20|3a|"; nocase; depth:14; content:"e1|3a|q13|3a|announce_peer1|3a|"; nocase; distance:55; threshold:type both, count 1, seconds 300, track by_src; reference:url,wiki.theory.org/BitTorrentDraftDHTProtocol; classtype:policy-violation; sid:2008585; rev:4; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)