Connect to your 678 via serial cable or telnet (if you haven't set
your EXEC and ENABLE passwords yet, you'll have to use the serial
connection).
Log into the 678 and get into ENABLE mode (See the Quick start page
on my site).
Set the NAT wildcard with the commands
set nat entry add 10.0.0.4
write
This will route any incoming internet connections to your local PC
with
the IP of 10.0.0.4.
your EXEC and ENABLE passwords yet, you'll have to use the serial
connection).
Log into the 678 and get into ENABLE mode (See the Quick start page
on my site).
Set the NAT wildcard with the commands
set nat entry add 10.0.0.4
write
This will route any incoming internet connections to your local PC
with
the IP of 10.0.0.4.