How do i write an exception to a firewall?

[Hacp]

I want to write an exception to a firewall, to open a specific port. How do i do it? I have full acess to admin features, it is my firewall, and my router, and my connection, and my network. Thank you.

 

[Pheran]

Err, it sure would be helpful if we knew what firewall you were using.

 

[Nothinman]

You can start by reading the manual for your firewall...