User manual

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 SG PCI appliance to run in masquerading mode. This is
discussed in the chapter entitled Firewall.
Secure by default
By default, all SnapGear units 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
accessible by other hosts on your LAN without further configuration of the SnapGear unit.
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).
8
Introduction