IP address forwarding is used when you want to map a routable IP to
a machine on your network and leave NAT enabled. This is common where
you have more machines than IPs, and those machines without IPs are
not running any external services (standard workstations). Common
setup is to map the machines that run external services and need outside
connectivity while leaving all other machines private and behind NAT.
Open a telnet client (Hyperterminal, Secure CRT, etc.) and telnet to
192.168.254.254. This will display Login: with a cursor
next to it. The login is the password of the router. The default password
is admin. Type this in and hit Enter. If the correct password
was entered it will display Logged in successfully! with a pound (#)
sign underneath it. Enter in all commands, as displayed below, after the pound
sign. Remember to hit Enter after every line.
The command structure is easy to understand. First you need to know
which IP address you wish to forward. Let's say we want to forward
207.246.199.1 to server located on 192.168.254.10. Type:
sys addhostmapping 192.168.254.10 192.168.254.10 207.246.199.1
To forward 207.246.199.2 to the internal address 192.168.254.2 enter:
sys addhostmapping 192.168.254.2 192.168.254.2 207.246.199.2
Once you have added all your IP Forwards, type:
save
reboot
