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3. LAN Configuration
This chapter describes how to configure the LAN features of your VPN firewall. The chapter
contains the following sections:
• Manage IPv4 Virtual LANs and DHCP Options
• Configure IPv4 Multihome LAN IP Addresses on the Default VLAN
• Manage IPv4 Groups and Hosts (IPv4 LAN Groups)
• Manage the IPv6 LAN
• Configure IPv6 Multihome LAN IP Addresses on the Default VLAN
• Enable and Configure the DMZ Port for IPv4 and IPv6 Traffic
• Manage Static IPv4 Routing
• Manage Static IPv6 Routing
Manage IPv4 Virtual LANs and DHCP Options
• Port-Based VLANs
• Assign and Manage VLAN Profiles
• VLAN DHCP Options
• Configure a VLAN Profile
• Configure VLAN MAC Addresses and LAN Advanced Settings
A local area network (LAN) can generally be defined as a broadcast domain. Hubs, bridges,
or swit
ches 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, as if the VLANs were on two separate LANs.
A VLAN is a group of computers, 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