alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"ET POLICY Proxy POST Request"; flow:to_server,established; content:"POST http|3a|//"; nocase; depth:12; classtype:bad-unknown; sid:2001674; rev:8; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2019_07_26;)