SnapGear 2.0.1 - Manual (Page 51)

Network Connections
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Advanced
The following figure shows the advanced IP configuration:
Figure 3-8
Hostname
The Hostname is a descriptive name for the CyberGuard SG appliance on the network.
DNS Proxy
The CyberGuard SG appliance can also be configured to run as a Domain Name Server.
The CyberGuard SG 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 CyberGuard SG appliance as their DNS server.