Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET !6661:6668 (msg:"ET MALWARE IRC Channel join on non-standard port"; flow:to_server,established; content:"JOIN|20 3a 20|#"; nocase; depth:8; classtype:policy-violation; sid:2000351; rev:12; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_07, reviewed_at 2024_09_16;)