Re: Tricky routing with XP Pro?

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Steve Winograd [MVP] wrote:
If I understand your question:

1. The developer already has access to the rest of the network on DEV
MACHINE via NIC2.
Correct

2. He now needs to access the rest of the network from the notebook
computer. You want to know how to do that by using DEV MACHINE as a
router for the notebook computer.
Correct again.

Here are two possible solutions that don't require creating routes or
making any changes on the other LAN machines:

=============================
Solution 1
=============================
He does use a wifi link to access the corporate network, however, I
would like to learn how to do this by using XP as a router. This is a
scenario that I have often encountered and I would like to get a
solution for more than just this specific case.

1. Disable IP routing on DEV MACHINE.

2. Add a second NIC (USB or CardBus) to the notebook computer and
connect it to the corporate network. It will get a 192.168.100.x
address for access to the rest of the network.
<snip>

=============================
Solution 2
=============================
1. Disable IP routing on DEV MACHINE.

2. Enable Internet Connection Sharing on DEV MACHINE's NIC2
connection. If it asks what to use for the home network connection,
tell it to use the high-speed link.
This is a problem, since the corporate network policy enforced by the
domain does not allow ICS to be turned on on the DEV machine or
anywhere else for that matter. Since DHCP is in use on the network, it
would create chaos with clients not getting addresses from the correct
DHCP server.

So, although this may be a workaround in certain situations, it doesn't
solve the problem on how to set up XP as a full network to network
router.

(BTW. I have seen numerous articles and posting that refer to the
routing of subnets, when in fact the do not use subnets (ie they use
netmasks like 255.255.255.0 which is not a subnet, but a full network)

.

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