alert tcp any any -> $HOME_NET 1194 (msg:"ET EXPLOIT Possible OpenVPN CVE-2014-6271 attempt"; flow:to_server,established; content:"|20|"; depth:1; content:"|28 29 20 7b|"; fast_pattern; reference:url,news.ycombinator.com/item?id=8385332; classtype:attempted-admin; sid:2019323; rev:3; metadata:created_at 2014_09_30, cve CVE_2014_6271, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2019_10_08;)