At the moment I have a Enterprise Wiki in SharePoint 2013 server to use as a knowledge base. I can add all my users from the Active Directory to access the SharePoint site within the domain. Now I want to be able to add users and set a site ( 

    http://www.kb-inside.com ? ) 
because i dont think the normal URL will work ( 

    http://ins-sp2013/ )? 
Users should be able to access this knowledge base as they
 visit customers. How do I accomplish this, I am new to SharePoint.

Thanks !

Kevin