User manual

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29
4.2.3 IP Over ATM
Step 4: Select the IP over ATM (IPoA) radio button and click Next.
NOTE: DHCP is not supported over IPoA. The user must enter the IP address or
WAN interface for the default gateway setup and the DNS server
addresses provided by their ISP.
Step 5: Click Next to display the following screen.
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
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.