alert udp $EXTERNAL_NET any -> $HOME_NET 1434 (msg:"GPL SQL Slammer Worm propagation attempt"; content:"|04|"; depth:1; content:"|81 F1 03 01 04 9B 81 F1 01|"; content:"sock"; content:"send"; reference:bugtraq,5310; reference:bugtraq,5311; reference:cve,2002-0649; reference:nessus,11214; reference:url,vil.nai.com/vil/content/v_99992.htm; classtype:misc-attack; sid:2102003; rev:9; metadata:created_at 2010_09_23, cve CVE_2002_0649, confidence Medium, signature_severity Informational, updated_at 2019_07_26;)