alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO OpenVPN Update Check"; flow:established,to_server; http.user_agent; content:"Twisted PageGetter"; startswith; endswith; http.host; content:"swupdate.openvpn.net"; fast_pattern; startswith; endswith; classtype:policy-violation; sid:2014799; rev:6; metadata:created_at 2012_05_22, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_13;)