My system is a MacBook Air, so I cannot plug into the modem directly. And I do not want to turn my firewall off.
How can I specify to open a port, like port 56789 in Mac OS 10.6.8?
I know in the old Mac OS, there is an option for me to specify a custom port. But I cannot find it in OS X 10.6.8. In
System Preferences /
Firewall, I only can allow an applicaiton to access a new port.
However, now I'm programming, using a new port. So, it does not seem suitable for me. Can I simply open a port instead of using an Application to open a port?