For doing this, you must have enabled these features of playing internet games and applications
Universal Plug and Play: This feature is also known as UPnP which helps the internet applications and computers to easily access to your network and helps in making connection with the other devices whenever required. Some of the applications are like peer-to-peer connections or real time communications etc.
Port Forwarding: If the home network that you are using have server, then you can easily allow some type of incoming traffic to easily go to the server. For example this technique is used when you just want to make your game server to be searchable and easily visible on the internet.
Port Triggering: This is dynamic extension which is important or used when any of the application requires the technique of port forwarding for the computers which are more than one but they must not be simultaneously. This condition is also used when the outgoing ports are not matched with the incoming port.
DMZ Server: This server feature is very much needed when you are having video conferencing or you are playing games on the internet which are not compatible with the Network address translation or NAT. The router are designed in such a way so that they can easily recognize some of these types of applications and can work according to these applications, but the other applications cannot be worked with them.
Network Address Translation: This feature is also called as NAT which helps in checking the inbound traffic and the secured NAT helps in protecting the LAN networks from the hackers or any other attack from the internet which may cause from internet games, point-to-point applications or any type of multimedia applications.