UNC Path and Permissions

I wanted to try and get clarification on how UNC paths function. My understanding that when typing a UNC path, for instance to access a server running server 2003 I would use \\server01\share\foldera\folderb that each folder or hop required that you had permissions to move to the next level below.

However recently I ran into a case where a user did not have any rights to foldera but was able to access folderb if the full UNC path was entered. It seems that UNC acts in the same way a share would to bypass folders at higher levels that the user does not have access to. I didn't find any good information online so any help you can provide would be great.
jhsitAsked:
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oBdACommented:
That's not only via UNC, that's the normal behavior. This "behavior" is actually a user right, "Bypass traverse checking". This user right is by default given to the Everyone group.
"Access Denied" Error Message When Users Try to Access Shared Folders
http://support.microsoft.com/kb/277644
Bypass traverse checking
http://technet.microsoft.com/en-us/library/cc739389(WS.10).aspx
Permissions for files and folders
http://technet.microsoft.com/en-us/library/cc787794(WS.10).aspx
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jhsitAuthor Commented:
Great info, thanks!

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