User manual
Network Setup 
45
To have your SG unit obtain its LAN network settings from an active DHCP server on 
your local network, check DHCP assigned. Note that anything in the IP 
Address,Subnet Mask and Gateway fields are ignored. 
You may also enter one or more DNS servers. Multiple servers may be entered 
separated by commas. 
Firewall class 
The Firewall class setting controls the basic allow/deny policy for this interface. Allowed 
network traffic is accepted, denied network traffic is dropped; this means network traffic is 
denied silently, no response such as “connection refused” is sent back to the originator of 
the traffic. 
The following table details the policy associated with each firewall class. Note that VPN 
and Dial-In connections are by default assigned a firewall class of LAN. 
For further discussion of DMZ and Guest networks, see the sections DMZ Network and 
Guest Network further on in this chapter. 
Click Update to apply the new settings. 
Ethernet configuration 
Click the Ethernet configuration tab to modify the low level Ethernet configuration 
settings of an Ethernet network port. 
Incoming Interface  Outgoing Interface  Action 
LAN  Any  Accept 
VPN  Any  Accept 
Dialin  Any  Accept 
DMZ  Internet  Accept 
DMZ  Any except Internet  Drop 
Internet  Any  Drop 
Guest  Any  Drop 










