[SunHELP] Single NIC NAT box possible?

[Ian Hall-Beyer]

On Thu, 04 Jan 2001 10:37:40 +0800, Tim Chong wrote:

>Cable modem<Dynamic IP via DHCP>----H U B----AirPort Base Station
>                                    | |  |
>       The rest of the machines (NAT & DHCP via the AirPort Base Station)
>
>AirPort base station is Apple's wireless LAN base station with 1 10/100 port
>and 1 V.90 port (here we're using the NIC)
>
>Wondering if there's a way for me to subsitute the AirPort base station with
>a single NIC SPARC LX to provide NAT & DHCP for internal machines as the
>AirPort base station (minus the wireless LAN access of course).
>
>I know I should able to do something with 2 NIC and ipfilter but is it also
>possible using a single NIC?

I wouldn't recommend doing NAT with aliased interfaces, simply because
of the inherent security risk.

Also, with the airport, you'll need it providing DHCP to at least the
wireless side of the network as it will not forward DHCP requests.

-Ian

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