User manual

26
Enable NAT
If the LAN is configured with a private IP address, the user should select this
checkbox. The NAT submenu will display after the next reboot. The user can then
configure NAT-related features. If a private IP address is not used on the LAN side,
this checkbox should not be selected so as to free up system resources.
Enable Fullcone NAT:
This option becomes available when NAT is enabled
Service Name: This is a user defined label.
Step 6: Click Next to display the following screen.
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
If the firewall checkbox is selected, the Security submenu will display after the next
reboot. The user can then configure firewall features. If the firewall is not used,
this checkbox should not be selected so as to free up system resources.
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 this item to enable the ATM service. Untick it to stop the ATM service.