alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Hola VPN Activity - X-Hola-* Headers"; flow:established,to_server; http.header_names; to_lowercase; content:"|0d 0a|x-hola-"; threshold:type limit,track by_src,seconds 300,count 1; classtype:policy-violation; sid:2021886; rev:4; metadata:created_at 2015_10_02, confidence High, signature_severity Informational, updated_at 2024_04_28;)