Firewall problem

[atul]

Do you want to have the modem firewall specifically or is any firewall ok? I mean, there's OSX's own firewall, which I have put on, that doesn't interfere with gameplay.

To use the native firewall, go to system settings (or equivalent, my system isn't on English), pick Sharing, and there you should see button to enable firewall. Has worked for me, and Macs really aren't that much in the wild as it comes to nasty stuff floating around. But I'm not expert so I might be endangering all reading this, so at everyone's own risk.

And I think the IP address can be seen from the system prefs -> network. At least to me it says the IP address for ethernet and that I'm connected to internet via it.