How to access the fire wall?

[LiquidZGZ]

I want to built a P2P Share Program.
But there some question affair me.
So I want to get the question of how can I sent message access fire wall?
It will easy or difficutl.

[SaSBYa]

Usually It will be very difficult.
Expecially In Company or In Studios.
If you built a Socket Proxy,
It will be easy,
but ,
it still very difficult.
Some big companies like Intel,IBM can not get a very simple way to soulve it .
But Maybe SOAP will work.
Thank you.