Newbie simple LAN routing problem


G

Guest

Hi,

All I want to do is set up a 2003 server as a LAN router between two subnets
(production and test networks), whatever I try it's not working, I think I'm
gonna go mad soon.

Here's the setup:
Server 2003 with 2 NICs
NIC1
192.168.222.9/24
DG 192.168.222.254
DNS 192.168.222.1
NIC2
192.168.0.254/24
DG [blank]
DNS [blank]

192.168.222.0 is our production network with 222.1 = DC+DNS; 222.254 =
Internet gateway

Ran the RRAS wizard, selected Secure Connection between 2 private networks,
no DOD connections, then right-click server/properties in RRAS console,
select LAN routing only.

Added static routes:

Interface NIC1
Destination 192.168.222.0/24
GW 192.168.222.9
Metric 1

Interface NIC2
Destination 192.168.0.0/24
GW 192.168.0.254
Metric 1

Routing from production network to test is not important (AFAIK it won't
work anyway without additional static routes on the production side because
the configured default GW on production machines is the internet GW, not this
router I'm configuring).
However I need to route from the test network out onto the production LAN,
primarily for internet access.

I have a client on the test LAN configured like:
IP 192.168.0.1/24
GW 192.168.0.254
DNS 192.168.222.1

From this machine I can ping both interfaces on the Win2003 router box, but
none others on the 192.168.222.0 subnet.

What did I do wrong? I'm sure I'm missing something stupid here :(

TIA for any help
 
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B

Bill Grant

The problem is probably somewhere else! The router will forward the
traffic if it gets to it. But if the clients in the 192.168.222 subnet are
using 192.168.222.254 as their default gateway, the traffic will never get
to your internal router.

The easiest way to fix it is to add a static route to the router at
192.168.222.254 to bounce the local traffic to your internal router. eg

192.168.0.0 255.255.255.0 192.168.222.9

So your setup looks like this.

external router
192.168.222.254 (static route to redirect second local subnet)
|
clients
192.168.222.x dg 192.168.222.254
|
192.168.222.9 dg 192.168.222.254
RRAS router
192.168.0.254 dg blank
|
clients
192.168.0.x dg 192.168.0.254
 
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G

Guest

Sorted! Thanks :)
--
Regards,
David Hartry
MCSE
--


Bill Grant said:
The problem is probably somewhere else! The router will forward the
traffic if it gets to it. But if the clients in the 192.168.222 subnet are
using 192.168.222.254 as their default gateway, the traffic will never get
to your internal router.

The easiest way to fix it is to add a static route to the router at
192.168.222.254 to bounce the local traffic to your internal router. eg

192.168.0.0 255.255.255.0 192.168.222.9

So your setup looks like this.

external router
192.168.222.254 (static route to redirect second local subnet)
|
clients
192.168.222.x dg 192.168.222.254
|
192.168.222.9 dg 192.168.222.254
RRAS router
192.168.0.254 dg blank
|
clients
192.168.0.x dg 192.168.0.254

David said:
Hi,

All I want to do is set up a 2003 server as a LAN router between two
subnets (production and test networks), whatever I try it's not
working, I think I'm gonna go mad soon.

Here's the setup:
Server 2003 with 2 NICs
NIC1
192.168.222.9/24
DG 192.168.222.254
DNS 192.168.222.1
NIC2
192.168.0.254/24
DG [blank]
DNS [blank]

192.168.222.0 is our production network with 222.1 = DC+DNS; 222.254 =
Internet gateway

Ran the RRAS wizard, selected Secure Connection between 2 private
networks, no DOD connections, then right-click server/properties in
RRAS console, select LAN routing only.

Added static routes:

Interface NIC1
Destination 192.168.222.0/24
GW 192.168.222.9
Metric 1

Interface NIC2
Destination 192.168.0.0/24
GW 192.168.0.254
Metric 1

Routing from production network to test is not important (AFAIK it
won't work anyway without additional static routes on the production
side because the configured default GW on production machines is the
internet GW, not this router I'm configuring).
However I need to route from the test network out onto the production
LAN, primarily for internet access.

I have a client on the test LAN configured like:
IP 192.168.0.1/24
GW 192.168.0.254
DNS 192.168.222.1

From this machine I can ping both interfaces on the Win2003 router
box, but none others on the 192.168.222.0 subnet.

What did I do wrong? I'm sure I'm missing something stupid here :(

TIA for any help
 

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