I now ask for your advice. I've had me ports forwarded for numerous games - CS2D, Minecraft, and it all worked well until like a week ago or so. From that point in time on, despite having forwarded the ports in my router's control panel, somehow, they are blocked externally - my best guess, by Windows itself.
I've had a similar problem when I had Windows XP, but after I installed 7 in its place it all worked very well until the said week ago. Please, help me, I do not know what to do. Any questions that may help the problem solution process will be answered.