Direct to Server URL Loses Port Number (WebSphere Portal 6.1)

I recently encountered a situation that required direct-to-node testing of one server in my portal cluster, so I looked up the default port for this server and typed in my internal URL:  http://myserver:10048/wps/portal... It was immediately obvious that something was wrong when the IBM logo and the login button did not render correctly.

I attempted to log in anyway... 404.  I noticed that the URL was incorrect in that the server-specific port had been removed, so my URL looked like this:  http://myserver/wps/myportal/...

It took a little digging, but I was able to find and resolve the problem with the following steps.

In the Deployment Manager

1. Navigate to Resources -> Resource Environment Providers
2. Click WP_ConfigService
3. Click Custom Properties (on the right)
4. Clear the http.host.port property (mine was 80)
5. Clear https.host.port property to (mine was 443)
6. Sync the cluster and restart the portal servers

Blank values for http.port and https.port

Happy portalling!