Netopia r3100-u Guia De Referência

Toggling Address Translation Enabled to Yes enables the Netopia R3100 to send out an all-zeros IPCP address 
that requests an IP to be assigned to the Netopia R3100’s WAN inter face. Note that the remote IP address is 
127.0.0.2, which should also be the Default Gateway under IP Setup in System Configuration. This is done for 
profile matching purposes and because the IP address of the router the Netopia R3100 is dialing is not always 
known.

As mentioned earlier in this appendix, NAT works well for IP sessions originated on the Netopia R3100’s LAN 
inter face destined for the Internet without any additional configuration. For incoming IP connections from the 
Internet to a host on the Netopia R3100’s LAN inter face, Expor ted Ser vices need to be used.

Expor ted Ser vices are configured under IP Setup in System Configuration. This is where a par ticular type of TCP 
or UDP ser vice originating from the Internet is redirected to a host on the Netopia R3100’s LAN inter face. An 
example of this screen is as follows:

                            IP Profile Parameters

         Remote IP Address:                 127.0.0.2
         Remote IP Mask:                    255.255.255.0

         Address Translation Enabled:       Yes

         Filter Set...
         Remove Filter Set

         Receive RIP:                       No

Enter the remote IP network's IP address (form xxx.xxx.xxx.xxx decimal).
Configure IP requirements for a remote network connection here.