SharePoint Portal Server

There's actually two things that you need to do to make that work. I have it working with both netbios and with a FQDN names.

First you need to configure SPS to know that both names can reach the SPS server without having to go through a proxy server. SPS does a lot of talking to itself in order to render the pages that it shows to users. If a user hits it with a netbios name, it pulls data from different virtual directories to generate the resultant page. It uses the same URL that the user passed to it, when it tries to look itself up.

Use proxycfg.exe to configure a bypass address. The command should look something like:

proxycfg.exe -d -p myproxy:80 "*.mydomain.com;"

myproxy:80 is the same proxy that IE uses to get tothe Internet. If you don't,use a proxy, you still have to specify one, but you can put in something like fakeproxy:80

"*.mydomain.com; is the domain portion of the FQDN that you are going to enter in your DNS for the server. If you users will enter sps.mydomain.com you'd enter *.mydomain.com

is for all other local subnet hosts.

Next you just need to configure the workspace in IIS to use host headers for the FQDN that users will refer to it by.

Use the Internet Services Manager, select the default web site where the SPS virtual directories are located. Open the properties page for it, then on the Web Site tab, click on the Advanced button. In the "multiple identities for this web site" section, click on the Add button and type in the FQDN's that your users will use (and port 80). This is where you set IIS to recognize the CNAME in DNS.