Adding another network behind existing C class network

Shazinc

Junior Member
Oct 24, 2005
5
0
0
My small business is using a crappy linksys home router for everything right now and the LAN is set up as a typical c class network (192.168.x.x).

I'd like, however, to set up another network of computers that piggybacks off the same internet connection, but does not have access to the other computers already on the network.

I'm thinking that I could just buy any router, plug the WAN port into the current network, give it the other router's IP for the gateway, and set up it's LAN to have a different subnet mask and use something like 10.10.x.x so that it can act as the gateway for the rest of the computers.

A couple of questions.

1) Is this going to work as I have it planned?

2) If I do it ths way, will the users on the new sub network still be able to access the computers and equipment on the network above it? (my hope is that they won't)

3) If I need a fancier router to do this than a normal cable/dsl router, then will one like this work? http://www.newegg.com/product/product.asp?item=N82E16833124091

Thanks!
 

HKSturboKID

Golden Member
Oct 20, 2000
1,816
0
0
My recommendation is to get a manage switch and set up vlans. Point both gateway to the router that is connected to the internet and block each other's network ip range on the vlan to prevent unauthorize access.
 

skyking

Lifer
Nov 21, 2001
22,540
5,585
146
2) If I do it ths way, will the users on the new sub network still be able to access the computers and equipment on the network above it? (my hope is that they won't)
You want the protected network in the second subnet. so yes, the one you add will see the primary one.
 

Shazinc

Junior Member
Oct 24, 2005
5
0
0
Thanks. Actually, I just thought of another way. I noticed that currently our T1 modem connects to a 1 port cisco t1 router, which then connects to our crappy router. What if I simply add a switch/hub inbetween the cisco router and our other router? Then I could connect two separate routers to that switch, and maintain two separate networks, both pointing to the T1's router as the gateway. Neither LAN should be able to see the other.

Is my logic here correct?