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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 multi-
ple static WAN IP addresses to be assigned to the Netopia Gateway.
Static WAN IP addresses are used to support specific services, like a web server, mail
server, or DNS server. 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 servers are supported 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 served IP address for the NAT table.
What types of servers are supported by IPMaps? IPMaps allows a Netopia
Gateway to support servers behind the Gateway, for example, web, mail, FTP, or DNS serv-
ers. VPN servers are not supported at this time.
Can I use IPMaps with my PPPoE or PPPoA connection? Yes. IPMaps
can be assigned to the WAN interface 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 Gateway?
IPMap will support statically assigned WAN IP addresses from the
same subnet.
WAN IP addresses from different subnets are not supported.