alert tcp $EXTERNAL_NET 6112 -> $HOME_NET any (msg:"ET GAMES Battle.net incoming chat message"; flow:established,from_server; content:"|FF 0F|"; depth:2; content:"|05 00 00 00|"; offset:4; depth:4; classtype:policy-violation; sid:2002170; rev:5; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2019_07_26;)