Security Considerations


Indexing Service is no longer supported as of Windows XP and is unavailable for use as of Windows 8. Instead, use Windows Search for client side search and Microsoft Search Server Express for server side search.


Be careful when substituting parameters for the CiTemplate parameter because you could unintentionally allow files in scripts directories with only Execute permission to be sent over the network. For example, if an .idq file contained the line


A client could send a Uniform Resource Locator (URL) that contained the following line in the query string:


With this string, an unauthorized user could read the contents of a confidential file.

It is better to switch among different .htx files by just using the base name of the file and adding the script directory and file name extension in the parameter substitution. The following file, Sample.idq, shows how to do this:


The query can be executed with a URL like the following:



A URL or a form-based query can send up to 4 kilobytes (KB) of data. If a query larger than 4 KB is sent, the behavior is unpredictable. The query size includes all variables sent from the browser to the .idq file.