Port 123456 does not exist. To open port 50001 you need to change settings for your port routing tables. Without knowing the exact model of your router it's virtually impossible to help you.
It will manage ports on your router and firewall.
It does not matter if you are connected through wireless or cable, your router can provide firewall protection for all of its ports on the LAN side. If your question is: Is my wireless router's firewall protecting me, although I do use it for wireless connectivity, the answer is yes. Your routers firewall protects you whether you use the wireless option or not.
You have to access your firewall ports, and block the port that communicates to battle.net.
The same way you forward ports through wired networks. You can wirelessly access the router's firewall.
Usual routers do not have such protection. But you can use router's firewall to protect some well known ports and attacks with well known patterns.
firewall, router,layer 3 switches and i approve that answer ! NO! In general the firewall is a layer 4 device, it traffics filter incoming and outgoing ports. It uses the function of TCP and UCP. However a Firewall can also be a layer 3 device as in internal firewall in a router. Also a switch is a layer 2 device unless your talking about a Router switch.
It may vary somewhat by the firewall or router you are using, but theoretically, every port from 1 to 65535 can be forwarded.
yes router forward traffic to all ports.
A router will typically support between 4 and 8 ports. For additional ports, a standard Ethernet switch can be connected to one of the ports.
the router as ports commonly used for lan cannection is (Ethernet)
A switch cannot function as a router. But you can plug a switch in to one of the ports on the router if you need additional ports.
The number of ports vary with the router - some as few as 4, and some many more than that.