Hmmm, do I detect sudden change of mood (this is cynism)?

It's no problem when people don't understand.
The best learning experience is not somebody telling them which switch to set, but giving someone a good lead as to
where to find the info. Don't go looking for COD4/5 specifics on a router forum but go looking for it on a COD forum. I found all the ports just by looking at the first query results in Google. You were given that link too....or do you want others to do the manual labour and report back to you?
If you want a full manual on networking you might want to put some effort in looking around yourself before getting "into the kitchen": Wikipedia, Google etc are pretty resourceful. The forum is here to help people with issues, not to provide a course in networking.
And don't feel offended. It's just words.