Thanks for the replies. Unfortunately my friend is not admin on its lan/router so not possible from its side.
From my side everything is more complicated because I have two router chained.
The modem router is 192.168.0.1 and here is what I have been trying to setup:
I have been trying various combination for remote host and internal host ip without success.
My computer is ip 192.168.1.115 and it is plugged to the second router (cisco) which is 192.168.1.1
It set up this way:
I know it is not the most frequent cabling but I need it this way and I cant change the general setup (eg: removing one router).
Anyone good about that to underline where I am going wrong?
Thanks