Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Address Lookup Domain (get .geojs .io) in TLS SNI"; flow:established,to_server; tls.sni; content:"get.geojs.io"; bsize:12; fast_pattern; classtype:external-ip-check; sid:2039595; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2022_10_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_28, reviewed_at 2025_04_17;)