If i build the unity game in Window,linus,Max or android then networking works fine but if i build the same code in Web Player then networking donot work.

If i build the unity game in Window,linus,Max or android then networking works fine but if i build the same code in Web Player then networking donot work, even connection is not established in Web player build. I have searched alot, even 1 month have passed in this problem, Please help.