alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT VNC Possible Vulnerable Server Response"; flow:established; dsize:12; content:"RFB 003.00"; depth:11; flowbits:noalert; flowbits:set,BSposs.vuln.vnc.svr; reference:url,www.realvnc.com/docs/rfbproto.pdf; reference:cve,2006-2369; classtype:misc-activity; sid:2002912; rev:7; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)