In Small Business Server 2003 the standard port for companyweb was 444 but for Small Business Server 2008 this changed to port 987. A major problem in some cases is the fact that many companies are very restrictive when it comes to having ports open in their firewalls. This makes companyweb useless for many users. The solution is to put companyweb on the same port as the site SBS Web Applications, port 443 which is open in almost all firewalls out there.
This is achieved by running the below command from the directory \inetpub\adminscripts. Note though that you have to put in the ID of the SBS SharePoint site which can be found by marking “Sites” in IIS Manager.
cscript.exe adsutil.vbs set /w3svc/<IDFORSBSSHAREPOINT>/SecureBindings
After running this command and restarting the web service the companyweb can be reached by browsing to the address https://companyweb.contoso.com. There might be some problems with for example page not displaying without adding default.aspx or browsing document libraries so do not forget to also change the alternate access mappings. This is done in SharePoint Central Administration > Operations > Global configuration > Alternate access mappings. Change the entry which points to the site with port 987 and instead enter the name as you did for companyweb.contosoe.com in the above command.