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Enable Fullcone NAT:
This option becomes available when NAT is enabled.
Known as one-to-one NAT, all requests from the same internal IP address and port
are mapped to the same external IP address and port. An external host can send a
packet to the internal host, by sending a packet to the mapped external address.
Enable Firewall checkbox:
If the firewall checkbox is selected, the Security
submenu on the left side main panel will be displayed after system reboot.
The
user can then configure firewall features after the system comes up.
If firewall is
not used, this checkbox should be de-selected to free up system resources for better
performance.
When system comes back after reboot, the Security submenu will
not be displayed on the left main panel.
Enable IGMP Multicast:
Tick the checkbox to enable IGMP multicast (proxy).
IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report
their multicast group memberships to any immediately neighboring multicast
routers.
Enable WAN Service:
Tick the checkbox to enable the WAN service.
If this item
is not selected, you will not be able to use the WAN service.
Service Name:
This is a user defined label.