NETGEAR UTM9S

Firewall Protection
149
ProSecure Unified Threat Management (UTM) Appliance
Figure 82.
2. In the Multicast Pass through section of the screen, select the Yes radio button to enable
multicast pass-through. (By default the Yes radio button is enabled.)
When you enable multicast pass-through, an Internet Group Management Protocol
(IGMP) proxy is enabled for the upstream (WAN) and downstream (LAN) interfaces. This
proxy allows the UTM9S to forward relevant multicast traffic from the WAN to the LAN,
and to keep track of the IGMP group membership when LAN hosts join or leave the
multicast group.
3. If load balancing is configured, select the upstream interface to which multicast traffic is
bound because only a single interface can function as the upstream interface. From the Bind
Upstream interface to drop-down list, select the interface (WAN1 or WAN2) or the slot in
which the xDLS module is installed. The default interface is WAN1.
When you change the WAN mode to load balancing, multicast traffic is bound by default
to the active interface of the previous WAN mode.
If the interface to which multicast traffic is bound is configured for PPPoE, PPPoA, or
PPTP, you need to add the multicast source address to the Alternate Networks table:
a. In the Alternate Networks section of the screen, below the table, enter the following
settings:
• IP Address. Enter the multicast source IP address.
• Subnet Mask. Enter the subnet mask for the multicast source address.
b. Click the Add table button in the rightmost column to add the multicast source
address to the Alternate Networks table.
Repeat step a and step b for each multicast source address that you need to add to
the Alternate Networks table.