alert tcp $HOME_NET any -> $EXTERNAL_NET 1024:65535 (msg:"ET INFO TLS/SSL Client Hello on Unusual Port SSLv3"; flow:established; flowbits:isnotset,BS.SSL.Known.Port; flowbits:isnotset,BS.SSL.Client.Hello; flowbits:set,BS.SSL.Client.Hello; flowbits:noalert; content:"|01 03 00|"; depth:5; classtype:unusual-client-port-connection; sid:2003005; rev:10; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2024_03_14;)