Ok, I didn't explained quite well what's my problem.
Let's take it for how it really is, de facto.
Please try to access this website www.novamodul.ro. You will see that you can access the site, or you can try this:
http://86.127.85.x. Also you will get the same.
This site is hosted by the Win 2K3 SBS. Port 80 is forwarded to Win 2K3 through Fedora 6 server.
Like many, I guess, I've configurated the intranet for this class of IP's: 192.168.xxx.yyy.
My workstation, like the Win 2K3 server has an IP from that class and is running Win XP HE (if that matters).
From my workstation, also from any workstation in the network (all running Win XP) I can't access the site mentioned up there, neither with www.novamodul.ro or
http://86.127.85.x, since I've set up the Fedora server as router for my intranet.
Also from my workstation I have no problemm accesing www.yahoo.com or any other sites.
Before Fedora I've had an hardware router (it worked fine a while, but it wasn't what we expected for our needs). When using that router I have no problem accessing www.novamodul.ro.
So, where is my problem?
Tnx for trying to help me.