BFV dedicated Windowsserver on a private LAN behind firewall

Tried to run a dedicated server last night, but I only got it working
locally. Two questions:

1) Which ports are exactly needed for BFV - I have searched the net and
found different and numeruos UDP and TCP ports for this.

2) The server is on a local LAN with a nated, local IP (10.10.10.10). It
gets listed on the gamespy list with this local IP. If I change the IP in
the BFV dedicated server GUI to manually use the public IP, the battlefield
server will not start. My guess is that it tries to contact its public IP
and fails (because my firewall does not allow access access to and from the
same interface when addresseing the public IP). Is my hunch correct, and how
can I solve this? Is there a way to let BFV server report public IP, but use
local IP?

Regards, Lars.