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4. LAN Configuration
This chapter describes how to configure the advanced LAN features of your UTM. This chapter
contains the following sections:
• Manage Virtual LANs and DHCP Options
• Configure Multihome LAN IPs on the Default VLAN
• Manage Groups and Hosts (LAN Groups)
• Configure and Enable the DMZ Port
• Manage Routing
Note: The initial LAN configuration of the UTM’s default VLAN 1 is
described in Chapter 2, Using the Setup Wizard to Provision the
UTM in Your Network.
Note: The Wireless Settings configuration menu is shown on the UTM9S
only, accessible under the Network Config main navigation menu.
Manage Virtual LANs and DHCP Options
A local area network (LAN) can generally be defined as a broadcast domain. Hubs, bridges,
or switches in the same physical segment or segments connect all end node devices.
Endpoints can communicate with each other without the need for a router. Routers connect
LANs together, routing the traffic to the appropriate port.
A virtual LAN (VLAN) is a local area network with a definition that maps workstations on
some basis other than geographic location (for example, by department, type of user, or
primary application). To enable traffic to flow between VLANs, traffic needs to go through a
router, just as if the VLANs were on two separate LANs.
A VLAN is a group of PCs, servers, and other network resources that behave as if they were
connected to a single network segment—even though they might not be. For example, all
marketing personnel might be spread throughout a building. Yet if they are all assigned to a
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