Hello,

This is my config and my problem.
    A server as W1, under Windows 2008 R2, VMWare Workstation installed and with a public IP adress
    A server as W2, under Windows Server 2003, with a private IP adress

W2 is an virtual machine hosted under W1. W2 hosts several Web applications under IIS (and DotNetNuke).
On W2, IIS is running under the port 80, standard installation.

To access Web applications from outside (from Internet), we redirects W2's port 80 toward the W1's port 8080 and opens the 8080 port in W1's firewall.
All Web applications run fine, with "PublicAdress:8080", except for DotNetNuke.

In the DotNetNuke's web.config, I have activated the line "UsePortNumber", and added an alias "PublicAdress:8080/MyDotNetNuke".
Despite this, DotNetNuke is very unstable.
When I browse my DotNetNuke site, my browser try to load pages without 8080 in the URL (error Page Not Found) and in the PortalAlias table, I see a new line with "PublicAdress/MyDotNetNuke".

Thanks for you help