User's Manual

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Field Name Descriptopn
Enable NAT This option is enabled by default and supports sharing the WAN interface
across multiple devices on the LAN. Also enables the functions in the NAT
sub-menu and addition PPPoE NAT features to select. Click the checkbox to
disable NAT.
Enable Fullcone NAT Enables one-to-one NAT.
Enable Firewall This option is enabled by default and enables functions in the
Security
sub-menu.
Enable SIP ALG Click to enable Session Initiation Protocol (SIP) pass-through NAT. Used for
Voice over IP (VOIP) applications.
IGMP Multicast
section
Enable IGMP Multicast
Proxy
Click to enable Internet Group Membership Protocol (IGMP) multicast.
Used by IPv4 hosts to report multicast group memberships to any neigh-
boring multicast routers.
Enable IGMP Multicast
Source
Click to enable this service to act as an IGMP multicast source.
MLD Multicast
section
Enable MLD Multicast
Proxy
Click to enable multicast filtering. Used by IPv4 hosts to report multicast
group memberships to any neighboring multicast routers.
Enable MLD Multicast
Source
Click to enable this service to act as a multicast source.
Use Base MAC Address
on this WAN interface
Click to use the gateway's base (Primary) MAC address. Otherwise, a unique
MAC is assigned for each service.
Enable MACClone (
Appears when Use Base MAC Address is NOT selected
) Enter the MAC
address to be used as the close adddress.
9. For the remaining WAN Service configuration pages, use the instructions provided in the default gateway step in the PPP
over Ethernet section.
Bridging
Before you can configure a bridge WAN service, you must create the related ATM interface.
Note: This feature is available for SR515ac models only.