User manual

Getting Started
20
Connect the CyberGuard SG appliance to your LAN
Review your configuration changes. Once you are satisfied, click Finish to activate the
new configuration.
Note
If you have changed the CyberGuard SG appliance’s LAN connection settings, it may
become uncontactable at this point. This step describes how to set up the PCs on your
network to access the CyberGuard SG appliance and the Internet.
Connect the CyberGuard SG appliance to your LAN if you haven’t already done so.
 If you are setting up the SG300, connect PCs and/or your LAN hub directly to its LAN
switch.
 If you are setting up the SG560, SG565 or SG580 and have configured its switch as 4
LAN Ports, connect PCs and/or your LAN hub directly to switch A.
 If you are setting up the SG560, SG565 or SG580 and have configured its switch as 1
LAN Port, 3 Isolated Ports, connect port A1 directly to your LAN hub.
 Otherwise, connect the LAN port directly to your LAN hub.
Set up your LAN to access the Internet
To access the Internet, each PC on your LAN must be assigned an appropriate IP
address, and have the CyberGuard SG appliance’s LAN IP address designated as its
gateway and as its DNS server.
A DHCP server allows PCs to automatically obtain these network settings when they start
up. If your network does not have a DHCP server, you may either manually set up each
PC on your network, or set up the CyberGuard SG appliance's DHCP server.
 To use the CyberGuard SG appliance’s built-in DHCP server (recommended),
proceed to Automatic configuration of your LAN.
 If your LAN already has a DHCP server that you will use instead of the CyberGuard
SG appliance’s built-in DHCP server, proceed to Automatic configuration of your LAN
using an existing DHCP server.