The "default gateway" is your router.
You access your router's configuration page. Then, you go to the page that has to do with the forwarding (Gaming,Applications,Security,etc). In there you type the port you will forward, TCP or UDP, and for which IP address.
The TCP/IP information is supplied to any DHCP client on the network connected to the FastEthernet 0/0 interface of R1
The subnet mask within the TCP/IP configuration is used to distinguish the ? from the host address.
the tcp/ip frame uses the ip address to send messages between devices (computers, printers, etc) on your network. This frame is inside an ethernet frame on the network layer. The ethernet layer does not use ip addresses at all, they use mac addresses. For an ethernet frame to travel through a router, it needs a mac address. Your router actually does not need an ip address. It will respond to broadcasts. In fact sometimes it won't answer to tcp/ip requests. Its job is to deliver the datagram to its destination more than it is to answer you (your computer that is). So sometimes a router will not answer a ping, but a computer on the other side of the router will answer even if there are several router in the path.
The two files used to control TCP wrappers are /etc/hosts.allow and /etc/hosts.deny. The hosts.allow file specifies which hosts are permitted to access network services, while the hosts.deny file specifies which hosts are denied access. TCP wrappers use these files to manage and restrict access to services based on the host's IP address or hostname.
a TcP IPv4 ip address has 32 bits.
routers work at layer 3 (network) which usually means TCP/IP. Routing decisions are made based on a packets DESTINATION IP address.
There are two ways to configure Ip address . One method is to do this manually .And other is to do this using dynamic host configuration protocol.
MAC
In the LAN, its recommended to use DHCP because of the following two big reasons.Reliable IP address configuration: Using DHCP minimizes the human error caused while manual IP address configuration.Reduced Netwok Administration:Centralized and Automatic TCP/IP configurations.The ability to assign a full range of additional TCP/IP configuration values by means of DHCP options.
winipcfg
Blocking these ports should do the trick as they are the ports that WoW uses to communicate with the servers: 3724 TCP 6112 TCP 6881-6999 TCP