How does ip masquerading work (overview)?

[kgleason at ma.ultranet.com (Kevin M. Gleason)]

I assume that eth0 is the default for the internal network, is the other
(eth1 or whatever) assumed to be the outside world?
I have my 10baseT card set up for eth1 and 100baseT set for eth0. If
line one is correct how can I change it so the internal network (running
10 M) will see the 10 M side of my Linux box (and the outside world will
see me as a 100 M connection?

Kevin

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