Motorola Netopia 3342N - Manual (Page 87)

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Link: IPMaps
IPMaps suppor ts one-to-one Network Address Translation (NAT) for IP addresses assigned to ser vers,
hosts, or specific computers on the LAN side of the Motorola Netopia® Gateway.
A single static or dynamic (DHCP) WAN IP address must be assigned to suppor t other devices on the LAN.
These devices utilize Motorola Netopia®’s default NAT/PAT capabilities.
Configure the IPMaps Feature
FAQs for the IPMaps Feature
Before configuring an example of an IPMaps-enabled network, review these frequently asked questions.
What are IPMaps and how are they used? The IPMaps feature allows multiple static WAN IP
addresses to be assigned to the Motorola Netopia® Gateway.
Static WAN IP addresses are used to suppor t specific ser vices, like a web ser ver, mail ser ver, or DNS
ser ver. This is accomplished by mapping a separate static WAN IP address to a specific internal LAN IP
address. All traffic arriving at the Gateway intended for the static IP address is transferred to the internal
device. All outbound traffic from the internal device appears to originate from the static IP address.
Locally hosted ser vers are suppor ted by a public IP address while LAN users behind the NAT-enabled IP
address are protected.
IPMaps is compatible with the use of NAT, with either a statically assigned IP address or DHCP/PPP ser ved
IP address for the NAT table.
What types of servers are supported by IPMaps? IPMaps allows a Motorola Netopia® Gate-
way to suppor t ser vers behind the Gateway, for example, web, mail, FTP, or DNS ser vers. VPN ser vers are
not suppor ted at this time.
Can I use IPMaps with my PPPoE or PPPoA connection? Yes. IPMaps can be assigned to
the WAN inter face provided they are on the same subnet. Service providers will need to ensure proper
routing to all IP addresses assigned to your WAN inter face.
Will IPMaps allow IP addresses from different subnets to be assigned to my Gate-
way?
IPMap will suppor t statically assigned WAN IP addresses from the same subnet.
WAN IP addresses from different subnets are not supported.