SnapGear 2.0.1 - Manual (Page 34)

Getting Started
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Alternatively, to set up your CyberGuard SG appliance and PC for auto-configuration:
Before continuing, ensure your DHCP server has two free leases. One will be used for
the Web Management Console, the other for your PC.
Note
It is highly recommended that you reserve the IP address to be used by the Web
Management Console using the CyberGuard SG appliance’s MAC address. In bridged
mode, this will be the top MAC address of the three displayed on the CyberGuard SG
appliance itself.
Figure 2-11
Check the DHCP assigned check box. Anything in IP Address / Netmask will be
ignored.
You may also enter one or more DNS Server(s) to be used by the CyberGuard SG
appliance, not your PC, for Internet name resolution, however DNS server addresses
handed out by your DHCP server will take precedence.
Click Apply and Reboot.