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***These are only examples, not necessarily your actual IP addresses. Private IP Address Ranges
The default port is 17476 but can be changed to any unused port. This port will need to be opened for incoming traffic on your router / firewall.
We can't tell you how to modify your firewall and router. If you don't know how to modify the settings in your router and firewall, you should not be attempting to make these changes - you could cripple your network and lose internet access. Please contact an IT professional who is comfortable performing these tasks.