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LAN Configuration
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ProSecure Unified Threat Management (UTM) Appliance
• When a port receives an untagged packet, this packet is forwarded to a VLAN based on
the PVID.
• When a port receives a tagged packet, this packet is forwarded to a VLAN based on the
ID that is extracted from the tagged packet.
When you create a VLAN profile, assign LAN ports to the VLAN, and enable the VLAN, the
LAN ports that are members of the VLAN can send and receive both tagged and untagged
packets. Untagged packets that enter these LAN ports are assigned to the default PVID 1;
packets that leave these LAN ports with the same default PVID 1 are untagged. All other
packets are tagged according to the VLAN ID that you assigned to the VLAN when you
created the VLAN profile.
This is a typical scenario for a configuration with an IP phone that has two Ethernet ports, one
of which is connected to the UTM, the other one to another device:
Packets coming from the IP phone to the UTM LAN port are tagged. Packets passing through
the IP phone from the connected device to the UTM LAN port are untagged. When you
assign the UTM LAN port to a VLAN, packets entering and leaving the port are tagged with
the VLAN ID. However, untagged packets entering the UTM LAN port are forwarded to the
default VLAN with PVID 1; packets that leave the LAN port with the same default PVID 1 are
untagged.
Note: The configuration of the DHCP options for the default VLAN is
explained in Chapter 2, Use the Setup Wizard to Provision the UTM
in Your Network. For information about how to add and edit a VLAN
profile, including its DHCP options, see Configure a VLAN Profile on
page 103.
Assign and Manage VLAN Profiles
To assign VLAN profiles to the LAN ports and manage VLAN profiles:
1. Select Network Config > LAN Settings. The LAN submenu tabs display, with the LAN
Setup screen in view. The following figure shows the LAN Setup screen for the UTM25
with four LAN ports, and the default VLAN profile and another VLAN profile as
examples. Note that the LAN Setup screen for the UTM50 (not shown in this manual)
has six LAN ports in the Default VLAN section.