wtf do i put for prive and public? consider i have 2 comps wanting to play online
you need to do this(or so i think):
put in your computers IP address.
protocol type: UDP
private port: 6112-6140 (or ports you want to assign to it, make sure its the same as the impulsereactor.exe file)
public port: 6112-6140 (or ports you want to assign to it, make sure its the same as the impulsereactor.exe file)
then:
make a new virtual server
put in the OTHER computers IP address
protocol type: UDP
private port: 6150-6180 (or ports you want to assign to it, make sure its the same as the impulsereactor.exe file)
public port: 6150-6180 (or ports you want to assign to it, make sure its the same as the impulsereactor.exe file)
hopefully that works for u 
but then again, i havent needed to do this, i just opened the ports through the APPLICATIONS tab!