implementing NAT with one physical interface

From: Carole (cwr@xxxxxxxxxxxxxx)
Date: Thu Feb 03 2000 - 00:53:48 GMT-3


   
I thik the answer is probably 'no', but is it possible to set up NAT
with only one physical Ethernet interface, maybe with loopbacks &
secondary addresses? (a variation of one armed routing?)

I have been trying to figure out a way to set up NAT with one physical
interface. I have a Cisco 804 (that I am not using the ISDN port on),
which has only the 1 Ethernet Interface, plus three 10BaseT hub ports
on same Ethernet segment.

I'd like to set it up so that my ISP will connect to Eth 0 (via DSL
service) & provide a default IP address (x.x.x.86/24) and gateway
(x.x.x.1/24). Some PCs will hang off the three Ethernet ports. The
PCs will want to connect to the Internet, but have their private IP
addresses (say 10.1.1.2 - 10.1.1.4) shielded from the Internet.

thanks,

Carole



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