The WebDAV service is easier to set up with Mac OS X Server v10.6–you no longer need to configure complicated permissions on the /Library/WebServer/Documents folder to allow write access via WebDAV. By default, WebDAV remains disabled for the Web service to prevent unauthorized changes to the web server documents. However, if you enable the WebDAV feature of the Web Service, you must set up a realm to ensure only authorized accounts can make changes to the web server documents in /Library/WebServer/Documents .

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Mac OS X Server v10.6: Realms should be defined to restrict WebDAV access

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