LAN Configuration
103
ProSecure Unified Threat Management (UTM) Appliance
Figure 55.
3. From the MAC Address for VLANs drop-down list, select Unique. (The default is Same.)
4. As an option, you can disable the broadcast of ARP packets for the default VLAN by
clearing the Enable ARP Broadcast check box. (The broadcast of ARP packets is enabled
by default for the default VLAN.) If you choose to keep the broadcast of ARP enabled, you
can enter an ARP refresh rate in the Set Refresh Rate field. The default setting is 180
seconds. The maximum ARP refresh rate is 86400 seconds (24 hours).
5. Click Apply to save your settings.
Note: If you attempt to configure more than 16 VLANs while the MAC
address for VLANs is set to Unique on the LAN Advanced screen,
the MAC addresses that are assigned to each VLAN might no longer
be distinct.
Configure Multihome LAN IPs on the Default VLAN
If you have computers using different IP networks in the LAN, (for example, 172.16.2.0 or
10.0.0.0), you can add aliases to the LAN ports and give computers on those networks
access to the Internet, but you can do so only for the default VLAN. The IP address that is
assigned as a secondary IP address needs to be unique and cannot be assigned to the
VLAN.
It is important that you ensure that any secondary LAN addresses are different from the
primary LAN, WAN, and DMZ IP addresses and subnet addresses that are already
configured on the UTM.
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