Connecting 2 networks 1

[Kalisto]

Problem:
I have 2 networks, Network A is a group of various Sun Machines. Network B is my main network (mostly windows)

One of the machines on Network A has 2 network cards, 1 of which is used to allow this machine to talk to Network B.

I want to allow another PC on Network A access to various servers on the B network.

Now, from my dim and distant past of networking, I suspect that I need to make the new machine on A take the IP address of the Windows Network card from the A/B machine as the gateway. - What command / files do I need to edit to do this.

Do I then need to enable anything else (IP forwarding for example) to allow the Sun machine to talk to other machines on the main network ? - Again, what commands or files do I need to look at.

Thanks for any help,

K

 

[jerryshao]

The default gateway should be the IP address of the Unix Netowrk card from the A/B machine.

On the new machine, type:
route add 0.0.0.0 mask 0.0.0.0 someIP
The above command is for test only. To change your Windows' machine's default gateway, you need to go "Start-Settings-Control Panel-Network"

Is the gateway a Sun? If so, run
"ndd /dev/ip ip_forwarding" to make sure if the IP forwarding is enabled (by default YES).

 

[Kalisto]

Cheers, problem is, machine to be used as a gateway doesn't support NDD (it is a reallyold Machine), is there a manual way of enabling IP forwarding ?
K

 

[jerryshao]

Sorry I don't know if there is any file you can modify to enable IP forwarding.

What OS is running on the gateway?
If it's Solaris, it started to support ndd at least from 2.4 as far as I know.

If it's Windows, please check out this link:

http://www.lpt.com/windowsnetworking/regusers/w2kprout.htm

 

[bigdaddytim]

Have you tried the vi /etc/defaultrouter or do you not have that file. It does not have to be a router, just an IP in that file.