From: Wesley Darlington (wesley at domain yelsew.com)
Date: Tue 16 Apr 2002 - 10:17:42 IST
On Tue, Apr 16, 2002 at 09:58:42AM +0100, Gavin McCullagh wrote:
> suppose you've access to a wireless LAN and one wireless nic. Suppose also
> that you've multiple other machines which you would like connected to the
> LAN but no cables are around and you only have ordinary utp NICs in those
> machines.
>
> One way presumably is to get the one machine up with two NICs, one
> wireless, one utp and use it as a router. I'm not well up on how
> wireless lans work, can you just lash a switch/hub on the UTP end and
> expect all boxes to be able to get onto that network? Do you need to set
> up the 2NIC box as a firewall and do IP Masquerading etc?
It might be easiest to get the 2NIC box to act as a wireless-wired bridge.
So you probably want to enable ethernet bridging.
Note that you usually *can't* just go get a wireless base station that
has wired and wireless ports and expect that to work: Wireless Ethernet
in the presence of a base station operates in a special "infrastructure"
(aka "base station") mode, in which there can be exactly one base station.
And a box that is sold as a base station is usually firmly configured to
be a Base Station, and will not talk to another Base Station.
A linux box, however, with one wired ethernet and one wireless ethernet
card would not be a base station. That is, it would operate in either
ad-hoc (no base stations anywhere: ethernet with real ether) or
infrastructure in which something else is the base station. I imagine
it *could* operate as a base station, but you probably wouldn't want this.
Alternatively, you can masquerade the wired ethernet behind the wireless
ethernet. Pretend the wireless ethernet is just a normal ethernet and
configure masquerading/nat as for that. You don't need ethernet bridging
here, just the normal masq stuff.
Wesley.
PS. Does anybody know if the new Apple base stations (the ones with two
ethernet ports) can operate in non-base-station mode? Or if newer
firmwares for the older Apple base stations can make these older Apple
base stations operate in non-base-station mode? :-)
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