finding features in a content database in SharePoint 2010 using PowerShell or tools

Sometimes we have a feature id and we want to know the places where it is active, even as a dummy one. Below mentioned script might be helpful.

http://get-spscripts.com/2011/06/removing-features-from-content-database.html

or

http://featureadmin.codeplex.com/downloads/get/290833

or

http://archive.msdn.microsoft.com/WssAnalyzeFeatures

 

SharePoint 2010 Enterprise Search | SharePoint Crawl ExceptionalBehaviour

Security Issues to be taken care while configuring SharePoint Search for Public facing Portals - SharePoint
When search crawler [SPSCrawl.asmx and sitedata.asmx ] comes to a SharePoint site , how it gets to know whether it's a SharePoint site or a normal site ?

There is a custom header defined by Microsoft on SharePoint web applications : Name : MicrosoftSharePointTeamServices ; Value like : 14.0.0.4762

It tells crawler to dig to the item levels in SharePoint Lists , treat target as SharePoint Site.....



What if this custom header is removed on target ? :--> Search crawler will crawl up to list level only . If we use fiddler, while crawling site collection you could observe , there is no call made to SPSCrawl.asmx and sitedata.asmx by the crawler. This web application will no more be treated as SharePoint Website by Search crawl.
Now to make your site secure , you want that hackers may not get these custom headers , but search crawlers need it .
There is a way out , let your search crawl be targeted to a different web application than the public facing one !!!! And on public facing website use <clear /> under http response headers to hide from external world internal server information.

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