Problem accessing blazor webassembly app behind firewall

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deployment

WebAssembly

Blazor

I have a Blazor WebAssembly App, developed in .net 7, hosted on IIS. Because this App is inside our company LAN, we have a firewall the masks any URL from outside into another, like this:

Outside: https://www.companyname.pt/clientes
Inside: http://<server_ip_address>:<port>/clientes

However, although I can access the App from inside, by invoking

<server_ip_address>:<port>/clientes

directly, from outside it doesn´t work.

Did anyone have the same problem setting up the kind of configuration?

What I have tried:

I already tried changing the base path, like this:

<base href="/clientes/">

and didn´t work.