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# Limiting Internet Traffic on Your Network (1 of 8) - A router's firewall can examine each message coming from the internet - Decides if the message is allowed onto the network - A message is directed to a particular computer and to a particular application running on that computer - The ap...

# Limiting Internet Traffic on Your Network (1 of 8) - A router's firewall can examine each message coming from the internet - Decides if the message is allowed onto the network - A message is directed to a particular computer and to a particular application running on that computer - The application is identified by a port number, also called a port or **port address** - Routers offer the option to disable (close) all ports - Means no activity from the internet can get in - You must specify exceptions to this firewall rule in order to allow unsolicited traffic from the internet - Exceptions are allowed using port forwarding or a DMZ