Wingate + NT server

I’ve recently set up an NT server and wingate for the internet access. Now the problem i have is the following. At the clients it’s possible to surf but every time i try to fill in a java form and try to send it to the maker it doesn’t work. Now when i try to fill in that same form at the server that is also configured to make a connection thru wingate that works. Some people told me that i need to open some ports (3000,3001,3333) but i can’t seem to find how i do this at the server or at wingate of at the clients