CyberGuard SnapGear, Руководство пользователя

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Introduction
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1. Introduction
This chapter provides an overview of your SnapGear appliance’s features and
capabilities, and explains how to install and configure your SnapGear appliance.
This manual describes how to take advantage of the features of your SnapGear
appliance, including setting up network connections, a secure firewall and a VPN. It also
describes how to set up the SnapGear appliance on your existing or new network using
the SnapGear Management Console web administration pages.
SnapGear Gateway Appliances
The SnapGear gateway appliance range (SME530, SME550, SME570, SME575)
enables your office LAN to share a single, secure Internet connection.
The SnapGear 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 SnapGear appliance checks and filters data packets to prevent unauthorized
intruders gaining access.
The SnapGear 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 SnapGear gateway appliance’s external address.
SnapGear appliance models SME570 and SME575 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 SnapGear 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 SnapGear appliance, you can
remotely access your office network securely using the Internet. The SnapGear
appliance can also connect to external VPNs as a client.