alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY IP Check (myip .com)"; flow:established,to_server; http.host; content:"api.myip.com"; depth:12; isdataat:!1,relative; classtype:policy-violation; sid:2031188; rev:1; metadata:created_at 2020_11_06, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_06;)