SnapGear 1.7.8 - Manual (Page 55)

If your SnapGear appliance is configured for a Direct Connection to the Internet, you
must also set the IP address for the Internet Interface. Check DHCP assigned if the IP
address of the Internet Interface is set via a DHCP server, or enter the IP Address and
Netmask if you have a static address for the Internet interface.
Enter the IP address of default gateway in the Internet Gateway field. The SnapGear
appliance will send all packets not destined for the local network to this machine.
Enter the IP address of the DNS Server that the SnapGear appliance will use to resolve
domain names in the Domain Name Server field. This is only required if the SnapGear
appliance is configured with a static IP address on the Internet interface and does not
automatically get its DNS server address.
The SnapGear appliance can also be configured to run as a Domain Name Server. The
SnapGear appliance acts as a DNS proxy and passes incoming DNS requests to the
appropriate external DNS server. If this is enabled, all the computers on the LAN should
specify the IP address of the SnapGear appliance as their DNS server.
Network configuration
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