alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET POLICY Msnbot User Agent"; flow:established,to_server; http.user_agent; content:"msnbot"; nocase; reference:url,search.msn.com/msnbot.htm; classtype:not-suspicious; sid:2002830; rev:9; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_06;)