You have to go through your modem (at your modem's IP address, put into your web browser) and it should be somewhat self-explanatory once your in there. Most modems are simplified to be user friendly.
They prevent specified types of trafic from reaching specified network destination
Port forwarding is when you open a certain path for connections to a machine. For example if i want a program, which uses a port 3306, to be able to connect to my computer from the internet, I need to forward (open) this port first.
A port may be specified to ensure that a service or application communicates over a designated network channel, allowing for proper routing and security measures. Specifying a port helps avoid conflicts with other services and enables easier management of firewall settings. Conversely, a port may not be specified when default ports are used, simplifying configuration and reducing complexity, particularly in environments where standard services are trusted.
They prevent specified types of traffic from reaching specified network destinations.
The Port Authority closes at midnight.
The French wanted to close the port of New Orleans, located at the mouth of the Mississippi River.
No
By default, your minecraft port number is 25565, unless you've changed it this is your port number.
gauge port
There is no port number for facebook.com Sorry
port filtering
Yes, the Port of Houston which opens to the Gulf of Mexico.