alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET POLICY Centralops.net Probe"; flow:established,to_server; http.header; content:"CentralOps.net/)"; reference:url,centralops.net; classtype:policy-violation; sid:2003631; rev:7; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2024_02_08;)