Hey thanks for the detailed answer .

Meanwhile, my internet connection came back. Im not sure if it is because of the fact that i deleted and added again a ethernet connection for the network card that was connecting to the ISP modem , or something else happened; its very strange i cant figure it out.

But still, the laptop cannot communicate with the dekstop. Im reading the console logs, and im getting some DENY messages which i think are for packets coming from the laptop.

I'm using a direct connect cable and i tried entering the addresses manually. I will try again with the info you specified and post back with the result.

Thanks once again.