Hi we are running ports 7937 to 7970. If you want another port range put 
the port range in the brackets.

In order to open the server firewall we run these two commands in a cmd 
window  
for /L %i in (7937,1,7970) do netsh firewall add portopening UDP %
i "Networker UDP %i" ENABLE CUSTOM ip number of your networker serv

Then 
for /L %i in (7937,1,7970) do netsh firewall add portopening TCP %
i "Networker TCP %i" ENABLE CUSTOM ip number of your networker serv

HWere it says IP number of your networker server put in the number for 
example 10.1.1.1

This opens the ports 

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