Description: This property defines the case sensitive URL-pattern matching behavior for security constraints, servlets, filters, virtual-hosts, etc. in the WebApp container and external security policies. When the value is set to 'os', the pattern matching will be case- sensitive on all platforms except the Windows file system. Note that on non-Windows file systems, WebLogic doesn't enforce case sensitivity and relies on the file system for optimization. Therefore, if you have a Windows Samba mount from UNIX or Mac OS that has been installed in case-insensitive mode, there is a chance of security risk. In that case, please specify case-insensitive lookups by setting this attribute to true. Note that this property is used to preserve backward compatibility on Windows file systems. In prior releases, WebLogic was case- insensitive on Windows. Starting with 9.0 release the URL-pattern matching will be strictly enforced. During the upgrade of older domains the value of this parameter is explicitly set to 'os' by the upgrade plug-in, in order to preserve backward compatibility.