BEC 8920AC User Manual page 96

Configuring Your Router
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WAN – xDSL WAN Connection Setup (PPPoE)
Firewall: Enable to drop all traffic from WAN side. If enabled, all incoming packets by default would be
dropped, and please turn to IP Filtering Incoming to add allowing rules.
NAT: The NAT (Network Address Translation) feature allows multiple users to access the Internet
through a single IP account by sharing the single IP address. If users on your LAN have their own
public IP addresses to access the Internet, NAT function can be disabled. When enabled, a Fullcone
NAT parameter will appear, you can determine whether to enable Fullcone NAT. While only NAT
enabled, the default NAT type Port-Restricted cone NAT will be used.
Fullcone NAT: Enable or disable fullcone NAT. Fullcone is a kind of NAT, in this mode, all requests
from the same internal IP address and port are mapped to the same external IP address and port.
Furthermore, any external host can send a packet to the internal host, by sending a packet to the
mapped external address.
Note: In PPPoE connection, NAT is enabled by default, you can determine whether to enable Fullcone NAT or disable
Fullcone NAT and only use NAT, the default NAT type is Port Restricted cone NAT. Of Port-Restricted cone NAT, the
restriction includes port numbers. Specifically, an external host can send a packet, with source IP address X and source
port P, to the internal host only if the internal host had previously sent a packet to IP address X and port P
IPv4 Address: Select whether to set static IPv4 address or obtain automatically.
IP Address: If Static is enabled in the above field, enter the static IPv4 address get from the ISP.
Dial on demand: It is a parameter to let users to dial for connection to internet themselves. It is useful
when saving internet fees.
Inactivity Timeout: The set Inactivity timeout period, unit: minutes. It is combined use with Dial on
Demand; users should specify the concrete time interval for dial on demand.
IPv6 for this service: Enable to use IPv6 service.
IPv6 Address: Select whether to set static IPv6 address or obtain automatically.
IP Address: If Static is enabled in the above field, enter the static IPv4 address.
MTU: Maximum Transmission Unit, the size of the largest datagram (excluding media-specific
headers) that IP will attempt to send through the interface.
PPPoE with Pass-through: Enable or disable PPPoE pass-through. If it is enabled, PCs behind the
router can dial itself.
IGMP Multicast Proxy (for IPv4): Check whether to enable this feature. IGMP (Internet Group
Management Protocol) Proxy intercepts the IGMP request from Clients and set up the
multicast-forwarding table, it takes over some of the router's job, simplifying the router's job and
multicast communication.
IGMP Multicast Source (for IPv4): Enable to deliver multicast packets from a specific source to the
interested clients. (Only available in IGMPv3)
MLD Multicast Proxy (for IPv6): check whether to enable this function. MLD (Multicast Listener
Discovery Protocol) Proxy intercepts the MLD request from Clients a set up the multicast-forwarding
table. It takes over some of the router's job, simplifying the router's job and multicast communication.
Support MLDv1 and MLDv2.
MLD Multicast Source (for IPv6): Enable to deliver multicast packets from a specific source to the
interested clients. . (Only available in IGMPv3)
Click Next to continue to set the default gateway and DNS for IPv4 and IPv6.
BEC 8920AC User Manual