alert tcp $HOME_NET any -> $EXTERNAL_NET 5938 (msg:"ET POLICY TeamViewer Keep-alive outbound"; flow:established,to_server; dsize:5; content:"|17 24 1B 00 00|"; flowbits:set,ET.teamviewerkeepaliveout; flowbits:noalert; reference:url,www.teamviewer.com; reference:url,en.wikipedia.org/wiki/TeamViewer; classtype:misc-activity; sid:2008794; rev:3; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)