Secure Computing SG300 User Manual page 8

The SG565, SG560, SG570, SG575 and SG580 may also connect to a DMZ
(demilitarized zone) network. A DMZ is a separate local network typically used to host
servers accessible to the outside world. It is separated both physically and by the
firewall, in order to shield your LAN from external traffic.
The SnapGear unit allows you to establish a virtual private network (VPN). A VPN
enables remote workers or branch offices to connect securely to your LAN over the public
Internet. The SnapGear unit can also connect to external VPNs as a client. The SG550,
SG560, SG565, SG570, SG575 and SG580 use onboard cryptographic acceleration to
ensure excellent VPN throughput.
The SnapGear unit may be configured with multiple Internet connections. These auxiliary
connections may be kept on stand-by should the primary connection become
unavailable, or maintained concurrently with the primary connection for spreading
network load.
The SG565, SG570, SG575 and SG580 incorporate a powerful web proxy cache to
improve web page response time and reduce link loads. It is designed to integrate
seamlessly with upstream proxy caches provided by ISPs.
Front panel LEDs
The front and rear panels contain LEDs indicating status. An example of the front panel
LEDs are illustrated in the following figure and detailed in the following table.
Note
Not all the LEDs described below are present on all SnapGear unit models. Labels vary
from model to model.
Label
Power
Heart Beat
LAN Activity
Introduction
Activity Description
On Power is supplied to the SnapGear unit.
Flashing The SnapGear unit is operating correctly.
On If this LED is on and not flashing, an operating
error has occurred.
Flashing Network traffic on the LAN network interface.
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