Network address translation sits between a local area network and a wide area network, such as the Internet. To protect the devices connected to the LAN, NAT acts as a firewall, hiding all attached computers with private IP addresses. The firewall within a NETGEAR router also puts restrictions on what ports data packets can enter or exit through; applications that use blocked ports will suffer from connectivity issues when attempting to communicate with the LAN. To improve performance when using affected services, you can forward the ports on your NETGEAR device and change the NAT from closed to open.
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