alert tcp $EXTERNAL_NET any -> $HOME_NET 3389 (msg:"ET INFO RDP connection request"; flow:established,to_server; content:"|03|"; offset:0; depth:1; content:"|E0|"; offset:5; depth:1; classtype:misc-activity; sid:2001329; rev:10; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2024_03_07;)