default web server port: 80 - SharpointPortal Portal Top Level Site, url
http://netbiosServername
alternate web ports: 81 and 443 - WSS extended,
SPS CEntral Administration page: click on 'Configure alternate portal site URLs
for intranet, extranet, and custom access'
Edit the Default Web Site:
Mapping name:
Default URL: *
Intranet URL:
Extranet URL:
Custom URL: