Gateway Setup Assistant

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Gateway Setup Assistant is a tool in Apple Computer's Mac OS X Server versions 10.4 and higher that guides users through setting up Mac OS X Server as an internet gateway.

The Gateway Setup Assistant assumes two network interfaces and will automatically configure the DHCP, NAT, firewall, DNS, and VPN services.

Network interface controller hardware component that connects a computer to a computer network

A network interface controller is a computer hardware component that connects a computer to a computer network.

Network address translation (NAT) is a method of remapping one IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device. The technique was originally used as a shortcut to avoid the need to readdress every host when a network was moved. It has become a popular and essential tool in conserving global address space in the face of IPv4 address exhaustion. One Internet-routable IP address of a NAT gateway can be used for an entire private network.

In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted internal network and untrusted external network, such as the Internet.

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