Hello all,

In the days before ubiquitous wifi cards, I was able to "tether" a
friend's laptop without a wifi card to my laptop via a crossover
ethernet cable.  My laptop had DHCPd running on the wired interface
and was NAT'ed to route via the wifi interface.  This allowed my
friend to access the Internet via my laptop.  The setup was something
like this:

[friend] --- [me] -))) (((- Internet

where "---" represents the Ethernet cable and "-))) (((-" represents
the wifi connection.

In fact, I was able to do this for a few friends at the same time if I
brough along a switch/hub and had access to external power.

I would now like to do something similar, but somewhat in reverse:

[friend] -))) (((- [me] --- Internet

Specifically, my friend's laptop would connect to mine via wifi, and
my laptop would NAT/route traffic via the wired interface out to the
Internet.

I would imagine that I would somehow need to do the following:
1) create an ESSID
2) enable it to be broadcast
3) enable DHCPd on the wifi interface
4) enble NAT routing between the wifi and the wired interface.

I'm getting stuck at the first two steps.  This would seem as though I
am turning my laptop into a "hotspot".  However, using that search
term hasn't brought me any joy.  Every hit I've found refers to using
a wifi router (e.g. the WRT54G) and then all kinds of fancy
authentication schemes.

Am still Googling and browsing, but any pointers to the more correct
search terms would be helpful.

Thanks in advance.

Regards,
- Robert

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