DSL connection to NT & Unix ?

[DaveGoTech]

Hello-
We are attempting to connect DSL service into an existing 2-group network.
The 1st group has an NT Server. Clients are assigned IP addresses by the
NT Server (10.0.0.xx/255.255.255.0). I disabled DHCP in the Router,
fixed it's address, then configured NT for this default Gateway. All the
workstations connect to the internet.
The 2nd group, however, is seperately networked to a Unix server, using
fixed IP addresses (10.1.1.xx/255.0.0.0). The 2nd group wants connection
to the DSL line (via the network/router).
I know it will not work as is, as subnet masks are not the same. How can
these IP addresses be resolved so that everyone is happy? (Note: The 2nd
group may desire access to the NT Server, in addition to their Unix Server,
but not visa-versa.) Any suggestions are appreciated!

 

[wybnormal]

There are a few ways.. if you have Win2K server, throw a second NIC in it and setup NAT to translate from the one IP range to the other. A dual port ethernet router can do the same thing.. like a 1605R Cisco

Mike S
"Diplomacy; the art of saying 'nice doggie' till you can find a rock" Wynn Catlin

 

[DaveGoTech]

Thanks for the suggestion. We don't have a Win2K Server, and the search for a dual port ethernet router was not successful. I was made to believe there is a way to do this by configuration of the existing equipment.

 

[wybnormal]

Well.. this gets intesting.. *if* you have a Cisco, you may (depending on version) you could use something called "secondary IP addresses" where the port is split logically into multiple subnets. You could use the Unix server as a "router" with the routed daemon. I suggest the Unix server since in my opinion it's the better platform for routing compared to NT which could do it.

Mike S
"Diplomacy; the art of saying 'nice doggie' till you can find a rock" Wynn Catlin

 

[chgwhat]

Add another nic to the linux server, on the 10.0.0.xx net
(i would not recommend dhcp for this address), enable ip forwarding and make the nt server the default route for the linux box with a defined route to the 10.1.1.xx. This will allow a 10.1.1.xx client to past throught the linux box to the default gateway the nt server which has the ISP connection.
I think this will support access to the nt server, providing NAT is not used. You may have to add a route to the nt server for the 10.1.1.xx net ( gateway is linux box )



Tony ... aka chgwhat
tony_b@technologist.com

When in doubt,,, Power out...

 

[DaveGoTech]

OK - this has been accomplished by a very simple setting, as I suspected, not by adding additional hardware. Simply change the IP address of the UNIX server to be within the range of the NT Server domain. Now everybody can access the internet through the router.