Introduction
8
One IP address is used to manage the CyberGuard SG appliance via the web
management console.
The other is the host PC's IP address, which is configurable through the host operating
system, identically to a regular NIC. This is the IP address that other PCs on the LAN
see. It should be dynamically (DHCP) or statically configured to use the same gateway,
DNS, etc. settings as a regular PC on the LAN.
Note
It is possible to configure the CyberGuard SG PCI appliance to run in masquerading
mode. This is discussed in the chapter entitled Firewall.
Secure by default
By default, all CyberGuard SG appliances run a fully secured stateful firewall. This
means from the PC that it is plugged into, most network resources are freely accessible.
However, any services that the PC provides, such as file shares or web services (e.g. IIS)
are not be accessible by other hosts on your LAN without further configuration of the
CyberGuard SG appliance. This is accomplished using packet filter rules, for details refer
to the Packet Filtering section of the chapter entitled Firewall.
LEDs
The rear panel contains LEDs indicating status. The two LEDs closest to the network
port are network activity (upper) and network link (lower). The two other LEDs are power
(upper) and heart beat (lower).
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