ZyXEL Communications PMG5318-B20B - Page 31

Chapter 4 WAN
PMG5318-B20B User’s Guide
31
Figure 20 WAN Service: NAT and IGMP Multicast: IPoE
Table 16 WAN Service: NAT and IGMP Multicast: IPoE
LABEL DESCRIPTION
Enable NAT Select this check box to activate NAT on this connection.
Enable NAT
Loopback
Use this when you use NAT virtual server settings to forward traffic from the WAN to an
internal server with a private IP address on the LAN side. NAT loopback lets users on
the LAN connect to the external public WAN IP address of the GPON Device to access
the server on the LAN.
Enable Fullcone NAT Select this check box to activate full cone NAT on this connection.
This field is available only when you select Enable NAT.
Enable Firewall Select this check box to apply the GPON Device’s security rules to this WAN interface.
Enable IGMP
Multicast Proxy
Select this check box to have the GPON Device act as an IGMP proxy on this connection.
This allows the GPON Device to get subscribing information and maintain a joined
member list for each multicast group. It can reduce multicast traffic significantly.
Enable IGMP
Multicast Source
Select this check box to have the GPON Device add routing table entries based on the
IGMP traffic.
No Multicast VLAN
Filter
Select this check box to have the GPON Device not filter multicast traffic based on its
VLAN.
Enable MLD
Multicast Proxy
Select this check box to have the GPON Device act as an MLD proxy on this connection.
This allows the GPON Device to get subscription information and maintain a joined
member list for each multicast group. It can reduce multicast traffic significantly.
Enable MLD
Multicast Source
Select this check box to have the GPON Device add routing table entries based on the
MLD traffic.
Back Click this button to return to the previous screen.
Next Click this button to continue.