Is it possible to setup netbsd so that I could have a machine which 
can dialin to a ppp server and do NAT for that connection, and then 
at other times act as a dialin server, answering calls for clients 
that can then connect to the other machines on the private network 
(no longer connected to the internet)?

Basically one machine doing two different things at different times:


             ppp             ethernet
Internet <-------> netbsd <---------- private network


             ppp             ethernet
client ----------> netbsd <----------> private network



I haven't found much info on setting up a ppp server.  Anyone done this?
--
Nathan Raymond
<http://www.everythingmac.com>