When you say both your windows box and your router are "connected to the
internet", what do you mean? Are they connected to a switch that also
connects to the DSL modem?
If so, are you paying the DSL provider for multiple IP addresses (or getting
them for free [ha!])?
The usual scheme is to pay for one IP address. Plug the DSL modem into the
router only (in the port labelled "WAN"). Plug everything else into the
router's built-in switch (the group of ports labelled "LAN"). If you do it
*any* other way, it can cause effects similar to what you describe, that one
computer works and the rest have problems.
Try this:
1. Uninstall windows. (laugh--it's a joke)
2. Shut down your windows box.
3. On your RH8 box, as root, run "/sbin/ifdown eth0".
(You do have only one network card, right?
If not, you may need to say something other than "eth0".)
4. Turn off your DSL modem and your router, so that
everything will start fresh after you've changed your
little network.
4. Switch your cables around as in the previous paragraph.
5. Turn on your windows box. See if it can reach the internet.
If not, check your router status/configuration.
6. On your RH8 box, as root, run "/sbin/ifup eth0". See if
it can reach the internet. If the windows box worked, this
should too.
7. See if your PCs can reach each other. If you've cabled it
right, this should work whether or not they can reach the
internet.
> -----Original Message-----
> From: S P [mailto:sage_newbie@yahoo.com]
> Sent: Wednesday, August 06, 2003 8:13 AM
> To: linux-net@vger.kernel.org
> Subject: Basic Routing problem
>
>
> Hi,
> I am very new to Linux networking and am having a
> problem with routing.
>
> I have 2 machines connected to the internet one
> running WinXP and other running RH8.0.
> Both are configured with DHCP. The windows machine is
> directly connected to the internet (I am using DSL).
> The linux box is connected to DSL router(Linksys)
> which in turn is connected to the internet.
>
> I am able to ping the windows machine from the linux
> box. But am not able to do it the other way round. I
> figured that this is due to the presence of the
> router. What do I need to do to get around this
> problem ? Also eventually when I use static IP
> addresses will I have to use NAT or IP forwarding ?
> Also an interesting thing is that I am able to ping
> the windows machine from linux box, but traceroute
> does not work !
>
> Thanks for any help,
> SP
>
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