Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY HTTP CONNECT Tunnel Attempt Outbound"; flow: to_server,established; content:"CONNECT "; nocase; content:"|0d 0a|"; within: 1024; distance: 0; content:"HTTP/1."; nocase; within: 8; distance: -10; content:!"|3a|80"; within: 4; distance: -11; content:"CONNECT "; nocase; content:"|0d 0a|"; within: 1024; distance: 0; content:"HTTP/1."; nocase; within: 8; distance: -10; content:!"|3a|443"; within: 5; distance: -12; classtype:misc-activity; sid:2008330; rev:11; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)