prorat v*.* S.E reverse connection help

[sse9011]

For reverse connection= [url]http://portforward.com/networking/staticip.htm[/url]
After setting up a static local ip address forward the correct ports on your router if you have one.

thanks but i dont know the ex, in ports of prorat. i only know the port 5**0 but the portforwarding says i need 2 ports(Ex in) when i only know 5**0 one..