alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Akamai NetSession Interface PUTing data"; flow:established,to_server; http.method; content:"PUT"; http.header; content:"user-agent|3a|netsession_win_"; fast_pattern; reference:url,www.akamai.com/html/misc/akamai_client/netsession_interface_faq.html; classtype:policy-violation; sid:2012508; rev:3; metadata:created_at 2011_03_16, confidence High, signature_severity Informational, updated_at 2020_04_19;)