What are the differences between Public URL and Internal URL when configuring Alternate Access Mappings in SharePoint2010

What are the differences between Public URL and Interna开发者_如何学运维l URL when configuring Alternate Access Mappings in SharePoint2010?

Updated http://sharepoint.microsoft.com/blog/Pages/BlogPost.aspx?PageType=4&ListId={72C1C85B-1D2D-4A4A-90DE-CA74A7808184}&pID=804

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Your answer is probably on this page: http://technet.microsoft.com/en-us/library/cc288173(office.12).aspx