Hi all,

I felt that this is right forum to ask this question.

I'm weak in my knowledge with ports and stuff. So I want to learn them, may topics like follows.

1. Open a port on a PC
2. Listen a port on another machine
3. Change the post
4. etc..etc...

Hope it's clear what I'm expecting.

So please can you guys/gals give me a help to do this. Any links or comments really appreciate.

Thanks a lot...