SnapGear 2.0.1 - Manual (Page 5)

Introduction
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1. Introduction
This chapter provides an overview of your CyberGuard SG appliance’s features and
capabilities, and explains how to install and configure your CyberGuard SG appliance.
This manual describes how to take advantage of the features of your CyberGuard SG
appliance, including setting up network connections, a secure firewall and a VPN. It also
describes how to set up the CyberGuard SG appliance on your existing or new network
using the Web Management Console web administration pages.
CyberGuard SG Gateway Appliances
The CyberGuard SG gateway appliance range (SG300, SG530, SG550, SG570, SG575)
enables your office LAN to share a single, secure Internet connection.
The CyberGuard SG appliance provides Internet security and privacy of communications
for small and medium enterprises. It simply and securely connects your office to the
Internet, and with its robust stateful firewall, shields your computers from outside threats.
The CyberGuard SG appliance checks and filters data packets to prevent unauthorized
intruders gaining access.
The CyberGuard SG appliance’s NAT/masquerading firewall means that although
computers on your office network can see and access resources on the Internet, all
outsiders see is the CyberGuard SG appliance’s external address.
CyberGuard SG appliance models SG570 and SG575 have an additional Ethernet port
that may be configured as a physically separate DMZ to host servers accessible to the
outside world, in order to further secure your local network. Alternatively, it may be
configured as a second Internet connection to perform network load balancing.
The CyberGuard SG appliance provides you with a Virtual Private Network (VPN) server.
A VPN enables remote workers or branch offices to securely access your company
network to send and receive data at a very low cost. With the CyberGuard SG appliance,
you can remotely access your office network securely using the Internet. The
CyberGuard SG appliance can also connect to external VPNs as a client.