alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"GPL WEB_SERVER ISAPI .printer access"; flow:to_server,established; content:".printer"; http_uri; nocase; reference:arachnids,533; reference:bugtraq,2674; reference:cve,2001-0241; reference:nessus,10661; reference:url,www.microsoft.com/technet/security/bulletin/MS01-023.mspx; classtype:web-application-activity; sid:2100971; rev:13; metadata:created_at 2010_09_23, signature_severity Unknown, updated_at 2019_07_26;)