Our standard getty(8) handles PPP logins - see getty(8) and 
/etc/gettytab for particulars.

After that, a careful reading of pppd(8) is required for its config 
files. The "login" attribute can be used to require PAP 
authentication of the peer, with the password taken from /etc/passwd.

The tricky part is getting a second IP address on the local LAN if 
you can't statically assign one.

	Erik <fair@clock.org>