Hey, welcome Killpo1
As a Modem user you should be able to HOST a game with him able to connect without changing anything in the settings.
if you are not able to connect to him, it might be that the port hasnt been opened properly yet, the port that should be open is the ''UDP 21000*''(reboot router perhaps? check Firewall as well)
*Will have to check at home which Ports I have open for IL2
HunterICX
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