ip routing issue with 4 subnets, accessing shared subnet

[JoshIE490]

have 3 people working remotely from one location. Each person connects via vpn on their own subnet and wan IP.

subnet #1
192.168.5.0\24

subnet #2
192.168.10.0\24

subnet #3
192.168.15.0\24

what I have done is introduced another linksys router to create a common shared subnet #4:

192.168.20.0\24

I want to attach the 4 printers we use to subnet #4 as well as 2 tivo boxes and a 1TB network share drive for video editing.

How can I setup routing that each subnet can access the resources on 192.168.20.0\24, and only those shared resources. Keeping each subnet(1,2,&3) a private network, not disturbing vpn tunnels,domains, and remote access for 1,2, and 3.

Is it possible for #1,#2, and #3 to only see #4. This routing solution would allow us to share all printers and digital video applications, as well as keep us private and secure.

Any help and all suggestions are greatly appreciated

thanks, Josh

 

[bobmothers]

Without a topology diagram it's difficult to envisage how the network is set up but assuming that subnets #1, #2 and #3 each connect to an interface on one router with an IP address in each subnet. Subnet #4 connects to this new Linksys router, which in turn connects to the original router. You will have to configure both routers with a routing protocol in order for traffic to flow between them. You will also need a fifth subnet to act as the point to point link for the two routers. Assign an address from this fifth subnet to each of the router interfaces which link the two routers.

I am assuming a Linksys router will use CISCO IOS as Linksys are a division of CISCO

On router 1 in global config mode type Router RIP press return
then type network 192.168.5.0 press return
then type network 192.168.10.0 press return
then type network 192.168.15.0 press return
then type network and enter the interface address from the fifth subnet and press return
then exit global config mode

On router 2 in global config type 'Router RIP' press return
then type network 192.168.20.0 press return
then type network and enter the interface address from the fifth subnet and press return
then exit global config mode

You may have to adapt these instructions to your topology especially if you have more than two routers as each router will need to be configured with a routing protocol and be told which networks it has attached to it.

This should get you started.

Bob

 

[talon121a]

Great post Bob,

Its also very dependant on the interface's.. On which direction the 'routing' goes..

Topology info would be great.. ;-)



--------
Jason Burton
Leximedia,LLC.
jab@leximedia.net
Donate toward Katrina Efforts! --

http://s1.amazon.com/exec/varzea/ts/my-pay-page/PELYGQVJ8Q7IB

 

[JoshIE490]

TOPOLOGY INFORMATION

ONE CABLE MODEM ACCOUNT WITH SPEED 8Mbps down / 768kpbs up connecting to a dmz switch interfacing 5 dynamic ip addresses.

SUBNET #1 LINKSYS BEFSX41 ROUTER 192.168.5.0/24
single wan interface pulls down dynamic dhcp address.
registered Dynamic DNS is used to connect vpn tunnels.
router functions as subnet DHCP server
4 Windows 2000 SP4 & 1 Windows XP Laptop connect to this wired router. Also a Linksys BEFW11S4 is connected to this subnet to act as a WAP.

SUBNET #2 SYMANTEC VPN 100 ROUTER 192.168.10.0/24
single wan interface pulls down dynamic dhcp address.
registered Dynamic DNS is used to connect vpn tunnels.
DDNS and DHCP server are the same as subnet 1.
One windows 98 and 3 windows 2000 workstations connect thru this wired router.

SUBNET #3 SYMANTEC VPN 200R Router 192.168.15.0/24
Dual wan interfaces pull down dynamic dhcp addresses.
Registered DDNS to each wan interface are assigned.
router functions as subnet DHCP server

12 Workstations both windows 2000 and XP are on this subnet.

SUBNET #4 LINKSYS BEFW11S4 192.168.20.0/24
THIS IS THE NEW ROUTER AND SUBNET
single wan interface pulls down DHCP address. DDNS assigned.

What I want to achieve is to put all printers and network peripherals that need to be shared at this location on this subnet. Examples:

Laser Printer #1 192.168.20.140
Laser Printer #2 192.168.20.141

Network Drive Array #1 192.168.20.150

etc...

Now with these items connected to the 192.168.20.0/24 subnet, how do I setup routing on the LAN interfaces of each router to access these shared devices.

My main goal is to have all workstations have access to the 192.168.20.0/24 subnet yet remain private and segregated elsewhere. That way each subnet can use printers and shared drive space, while still using a private subnet for work. Is this routing on the lan interface a possibility?

I hope this draws somewhat of a mental topology map. I can generate a visio diagram as well. Any and all help is much appreciated.

Josh