alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Lookup Domain (ident .me) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".ident.me"; endswith; fast_pattern; reference:url,github.com/chubin/awesome-console-services; classtype:external-ip-check; sid:2054166; rev:2; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2024_06_28, deployment Perimeter, deprecation_reason Duplicate, performance_impact Low, confidence High, signature_severity Informational, tag External_IP_Lookup, updated_at 2025_06_20, reviewed_at 2024_10_04, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)