Ever wanted to know how Alternate Access Mappings (AMM) work in SharePoint. Do you need to add host header to your web site or you wonder what the heck is internal and public URLs in SharePoint?

The following three articles will help you understand everything I think you need to know about Alternate Access Mappings in MOSS and WSS.

Just to give a fresh start – Internal URL is just a 302 redirect to the Public URL. It is this so simple.

Also make sure to test with FQDN (Fully Qualified Domain Names).

What every SharePoint administrator needs to know about Alternate Access Mappings (Part 1 of 3)
(talks about Internal and Public URLs)

What every SharePoint administrator needs to know about Alternate Access Mappings (Part 2 of 3)
(talks about the 6th most common mistakes you will ever make in setting up AMM)

What every SharePoint administrator needs to know about Alternate Access Mappings (Part 3 of 3)
(talks about Authentication Providers, Web Application Polices, External Resource Mappings)